Gym Safety Protocol: The Essential Guide to the New Normal

India’s gyms are open again. However, opening the doors is not the same as being safe. In fact, a gym operating without rigorous, evidence-based safety protocols is not simply a business risk; it is a clinical risk for every member who walks through the door. Furthermore, the risks are not limited to surface transmission of pathogens. The bigger risk is this: many Indians are returning to exercise after months or years of inactivity, carrying hidden changes in body composition, such as elevated visceral fat, depleted muscle mass, and compromised metabolic health, that may make them vulnerable to exercise-related injury and illness.

Consequently, gym safety in the new normal requires two parallel frameworks. First, a rigorous environmental and hygiene protocol that reduces infection risk. Second, a body composition screening protocol that identifies members who need modified exercise intensity before they injure themselves or experience a cardiac event. This article covers both in full clinical detail for gym owners, fitness professionals, and healthcare providers working with returning gym members in India.

WHO THIS GUIDE IS FOR
This guide is written for three audiences: gym owners and managers implementing safety systems, fitness professionals and personal trainers advising returning members, and healthcare providers and sports medicine clinicians working with patients who are returning to exercise after periods of inactivity or illness. Protocols 1 to 11 draw on WHO guidance, the Ministry of Health and Family Welfare (MoHFW) guidelines for gyms and yoga institutes,^[4] and published research; Protocol 12 (body composition screening) is InBody India’s own recommendation rather than a government requirement.

Why the New Normal Gym Is Fundamentally Different, and Why That Matters Clinically

Before the pandemic, most Indian gyms operated on an implicit assumption: members arrive fit, train, and leave. The gym’s responsibility was primarily equipment safety and cleanliness. In the new normal, however, that assumption is clinically indefensible. As a result, gym owners and fitness professionals must now operate with a significantly expanded understanding of member health risk.

Specifically, the following three changes define why the new normal gym requires fundamentally different protocols.

The Deconditioning Crisis: What Lockdown Did to Indian Bodies

Extended periods of physical inactivity can produce measurable changes in body composition. In particular, skeletal muscle mass can decline within weeks of sharply reduced activity: in a 14-day step-reduction study in healthy older adults, leg fat-free mass fell by about 3.9%,^[5] and a 2-week reduction in daily steps lowered lean leg mass in healthy young men.^[6] Moreover, body weight was on average higher after the first COVID-19 lockdown than before it in a worldwide meta-analysis of 36 mostly cross-sectional studies,^[7] and as muscle declines, fat, including visceral fat, may accumulate.

Consequently, a member who last attended your gym 12–18 months ago may be physiologically quite different from the one who left. Their cardiovascular fitness may have declined and their muscle mass may be lower. Their body fat percentage and visceral fat level may be higher. Furthermore, their metabolic health markers, such as insulin sensitivity, blood pressure, and resting heart rate, may have deteriorated.^[5][6] As a result, returning members should not be treated as resuming training. They should be treated as beginning training.

The Hidden Risk: Why “Looks Healthy” Is No Longer Enough

India’s widespread thin-fat phenotype, in which people appear slim but may carry high body fat, high visceral fat, and low muscle mass,^[3][8] creates a specific clinical risk in the gym setting. Specifically, a member with a BMI of 22 who appears fit may in reality have a visceral fat level of 11, a body fat percentage of 32%, and skeletal muscle mass significantly below the population norm. When this person begins high-intensity exercise after months of inactivity, the risk of a cardiovascular event, musculoskeletal injury, or metabolic crisis may be substantially elevated; in a classic case-crossover study, heavy exertion was associated with a far higher short-term risk of heart attack in habitually sedentary people than in regular exercisers.^[9]

Furthermore, standard health screening tools, such as blood pressure, resting heart rate, and BMI, cannot reliably detect this risk: in a Canadian study of adults of South Asian, Chinese, Aboriginal, and European origin, BMI significantly underestimated visceral fat in all non-European groups.^[10] In contrast, a 60-second InBody body composition scan identifies visceral fat level, skeletal muscle mass, body fat percentage, and ECW/TBW ratio, giving fitness professionals the clinical picture they need to prescribe exercise safely for every returning member.

CLINICAL WARNING FOR FITNESS PROFESSIONALS
Returning members who self-report as “fit” or “active” after extended lockdowns should not be taken at face value. In practice, perceived fitness and actual body composition may diverge after prolonged inactivity. Consequently, all returning members should complete a body composition assessment before resuming training at pre-lockdown intensity. This is not merely precautionary; it is a sensible clinical safeguard.

The 12 Non-Negotiable Safety Protocols for Indian Gyms in the New Normal

Protocols 1 to 11 draw on WHO guidance, India’s Ministry of Health and Family Welfare (MoHFW) guidelines for gyms and yoga institutes,^[4] and published evidence on transmission prevention and exercise safety; some operational details (such as cleaning intervals) are suggested good practice rather than regulatory requirements. Protocol 12 is InBody India’s own recommendation. Together, they form a practical operational safety framework for an Indian fitness facility.

Protocol 1: Mandatory Entrance Screening: Temperature + Health Questionnaire

Every member and staff member must be screened at the gym entrance before every visit. Specifically, this screening must include a thermal temperature check (the MoHFW guidelines require thermal screening at the entrance and allow only asymptomatic persons in,^[4] so anyone with a fever or COVID-19 symptoms should be turned away) and a standardised health questionnaire covering COVID-19 symptoms, recent travel, and contact with confirmed cases in the preceding 14 days.^[11]

In addition, members who have tested positive for COVID-19 should not be permitted to return until they have completed a medically supervised recovery period and have clearance from a registered medical practitioner. Furthermore, this clearance should include an InBody body composition scan to assess muscle mass and ECW/TBW ratio, which can provide useful additional information alongside the physician’s assessment after COVID-19 infection.

Protocol 2: Capacity Control: The Slot System

Gyms in the new normal must operate at reduced capacity. Specifically, the MoHFW guidelines advise planning the gym floor area on the basis of 4 square metres per person and limiting the number of members in each area and session.^[4] In practice, this means implementing a slot-booking system, whether through a gym management app, phone booking, or a physical sign-up sheet, that prevents overcrowding at peak hours.

Moreover, slot systems provide an additional benefit beyond infection control: they allow gym staff to pre-identify members who have been inactive for extended periods and schedule them for a returning-member assessment before their first session. Consequently, capacity control and clinical safety become mutually reinforcing rather than competing priorities.

Protocol 3: Sanitisation Stations: Placement, Products, and Compliance

Alcohol-based hand sanitiser stations (at least 60% alcohol, per CDC guidance,^[12] and many products use 70%) must be placed at the following locations: at each entrance and exit point, adjacent to every cluster of resistance training equipment, at the entrance to changing rooms and toilets, and at the reception desk. Furthermore, compliance must be enforced, not merely encouraged. Specifically, staff should visually confirm sanitisation at entry before issuing a daily access token or scanning a membership card.

Protocol 4: Equipment Disinfection Before and After Every Use

A gym’s hygiene is only as strong as its weakest disinfection step. In practice, a dual-clean protocol must be implemented: each member disinfects equipment immediately before use and immediately after use.^[4] Moreover, gym staff must conduct a supervised deep clean of all high-touch surfaces (barbells, dumbbells, cable handles, treadmill consoles, bench surfaces, and door handles) at regular intervals, for example every 90 minutes, throughout the operating day.

In addition, disinfectant wipes and spray bottles must be accessible within reach of every piece of equipment. Specifically, the disinfectant product used must have demonstrated virucidal efficacy. In a review of laboratory studies, 62–71% ethanol, 0.5% hydrogen peroxide, and 0.1% sodium hypochlorite inactivated coronaviruses on surfaces within one minute, whereas some other agents, such as 0.05–0.2% benzalkonium chloride (a quaternary ammonium compound), were less effective.^[13] Furthermore, all staff responsible for cleaning must be trained in correct application technique, including observing the contact time stated on the product label.

Protocol 5: Ventilation: The Most Underrated Infection Control Variable

Ventilation is widely recognised as important for limiting airborne transmission of respiratory pathogens indoors. Specifically, exhaled aerosol particles, which can carry SARS-CoV-2, are emitted in far greater numbers during vigorous exercise: in a laboratory study of 16 adults, emission rose about 132-fold from rest to maximal exercise and increased steeply above moderate intensity.^[14] Such particles can accumulate in poorly ventilated indoor spaces. Consequently, a gym with inadequate ventilation can be a higher-risk environment than many other indoor settings, because members are breathing more heavily; in South Korea, 112 infections were linked to fitness dance classes at 12 sports facilities.^[15]

Therefore, gyms should maximise fresh-air ventilation in exercise spaces through a combination of mechanical ventilation (HVAC systems or industrial fans) and natural ventilation (open windows and doors where possible). The MoHFW guidelines direct gyms to follow CPWD guidance for air conditioning and ventilation: temperature settings of 24–30°C, relative humidity of 40–70%, as much fresh-air intake as possible, and adequate cross-ventilation.^[4] Furthermore, where air conditioning is used, the recirculation of air from the exercise space back into the room without external fresh air exchange should be avoided as far as possible.

Protocol 6: Social Distancing on the Gym Floor

Standard WHO physical-distancing advice is to keep at least 1 metre from others,^[16] and the MoHFW guidelines ask gym users to keep a minimum of 6 feet (about 2 metres) as far as feasible, with cardio and strength machines placed 6 feet apart.^[4] A generous gap is especially sensible in a gym because aerosol emission rises steeply with exercise intensity.^[14] As a result, the recommended distance between members during exercise is a minimum of 2 metres in all directions.

In practice, this means physically repositioning or removing equipment to create the required spacing, placing floor markers clearly indicating minimum distance zones, and enforcing spacing during group fitness classes through fixed station assignments. Moreover, endurance-type exercise appears to produce more aerosol than resistance training (in one study, aerosol emission averaged about 4.9 times lower in a resistance session than in a spinning class^[17]), so high-intensity cardio equipment, such as treadmills, rowing machines, and exercise bikes, should have the most generous spacing of any equipment category.

Protocol 7: Face Covering Policy: Context-Specific Guidance

Face covering policy in gyms requires context-specific application. Specifically, masks are most effective and most feasible during low-intensity activities, such as resistance training, stretching, warm-up, and cool-down. However, the use of face masks during high-intensity cardiovascular exercise raises concerns about breathing resistance and breathlessness, particularly in members with respiratory or cardiovascular conditions: WHO advises against masks during vigorous physical activity,^[16] the MoHFW guidelines note that masks may cause difficulty in breathing during exercise,^[4] and a review found that although effects on blood gases are small in healthy people, some people with severe cardiopulmonary disease may become considerably more breathless.^[18]

Therefore, the recommended policy is: masks are mandatory in reception, changing rooms, corridors, and during low-intensity activity. Mask use is encouraged but not mandatory during moderate-to-high intensity exercise, provided that the minimum 2-metre distancing protocol is maintained. Note that the MoHFW guidelines of 3 August 2020 required face covers at all times on the premises (suggesting a visor during exercise),^[4] so follow whichever rule your state or local authority currently enforces. Furthermore, all staff must wear masks at all times without exception, including during coaching and personal training sessions.

Protocol 8: Shared Amenity Management: Changing Rooms, Showers, and Water Stations

Shared amenities represent some of the highest-risk transmission environments in a fitness facility. In particular, changing rooms, showers, and water stations combine close physical proximity, reduced mask compliance, and high-touch surface density. Consequently, the following measures must be implemented without exception.

• Changing rooms: Operate at reduced capacity (for example, a maximum of 50%). Enforce minimum 1-locker spacing between members. Disinfect all surfaces (benches, handles, locker doors) between each user cohort.
• Showers: Implement timed slots where possible. Ensure full disinfection between users. Consider temporarily closing shower facilities if disinfection compliance cannot be guaranteed.
• Water stations and drinking fountains: Drinking fountains should be closed and replaced with sealed bottle-fill stations. Encourage members to bring their own labelled water bottles. Shared water cooler cups must be eliminated entirely.
• Towel policy: Gym-issued shared towels must be replaced with single-use paper alternatives or a mandatory personal towel policy with visible towel possession required for gym floor access.

Protocol 9: Staff Training and Health Monitoring

Safety protocols are only effective if the staff implementing them are themselves healthy, informed, and compliant. As a result, all gym staff must complete a structured COVID-19 safety training programme before returning to work. Furthermore, daily health screening for all staff, including temperature checks, symptom questionnaires, and a documented sign-off before each shift, is mandatory and should be retained as a written log.

In addition, staff showing any COVID-19 compatible symptoms (fever, cough, loss of smell or taste, fatigue, or shortness of breath) must be immediately stood down and must not return to work until they have completed the required isolation period and received medical clearance. Moreover, gym owners should consider periodic body composition screening for their own staff using InBody technology, both as a health benefit and as a practical demonstration of the gym’s commitment to member wellness.

Protocol 10: Communication Strategy: Signage, Digital, and Direct

Safety protocols that are not communicated clearly do not exist in practice. Consequently, every gym operating in the new normal must implement a multi-channel communication strategy covering the following: physical signage at all entry points and in all zones of the facility, digital communication through member apps, WhatsApp groups, and email covering policy updates and booking procedures, and direct verbal briefings from staff to members at entry and during sessions.

Furthermore, signage must go beyond generic warnings. Specifically, it should include clear, positive instructions: what members should do (sanitise, space out, book ahead, disclose symptoms) rather than only what they must not do. In addition, communication should be bilingual, where relevant, in Hindi and English at a minimum to ensure comprehension across all member demographics.

Protocol 11: COVID-19 Case Response Plan

Every gym must have a documented, pre-prepared response plan for the event that a member or staff member tests positive for COVID-19 after attending the facility. This plan must include the following elements: immediate temporary closure of the affected areas for deep cleaning of all surfaces and HVAC systems, identification of members and staff who may have been in close contact with the case, notification to local health authorities in line with the MoHFW guidelines (which provide for risk assessment of contacts and disinfection of the premises by the designated public health authority^[4]), and a transparent member communication protocol.

Moreover, the response plan must be written down, stored accessibly, and rehearsed with all staff before the gym opens. In addition, a clear chain of command for decision-making (who authorises closure, who contacts health authorities, and who communicates with members) must be established in advance rather than under the pressure of an active case.

Protocol 12: Body Composition Screening for All Returning Members

This twelfth protocol is one that many gyms overlook, and it is arguably the most important from a clinical safety perspective. Specifically, every member returning to exercise after a period of extended inactivity must complete a body composition assessment before resuming training. This is not a commercial add-on; in InBody India’s view, it is a clinical safety measure.

As described earlier in this article, extended deconditioning produces significant and measurable changes in body composition. A member who has lost muscle mass and gained fat, including visceral fat, during lockdown should not be assumed to be able to train safely at the same intensity as before. Furthermore, a fitness professional who prescribes exercise without this information is, in effect, operating with a clinical blind spot that can create liability as well as risk to member health.

InBody in the Gym: More Than a Member Benefit, A Clinical Safety Tool

Gym owners across India are increasingly recognising that InBody body composition analysis is not simply a premium add-on for high-value members. In fact, it is becoming a foundational safety and business tool, one that protects member health, reduces injury risk, demonstrates professional clinical standards, and drives member loyalty through personalised, data-driven programming.

What InBody Shows That No Other Gym Tool Can

A standard gym intake process (PAR-Q questionnaire, resting heart rate, and blood pressure) captures cardiovascular risk markers. However, it does not measure the body composition changes that can affect exercise prescription safety. Specifically, it cannot quantify muscle mass, visceral fat, body fat percentage, or the ECW/TBW ratio, which can flag excess extracellular water (swelling and/or inflammation).^[19]

In contrast, an InBody scan completed in under 60 seconds provides all of the following, directly relevant to safe exercise prescription for returning members:

The Business Case: Why Body Composition Analysis Can Support Gym Revenue

Beyond the clinical safety argument, InBody body composition analysis may offer a return on investment for Indian gym operators. Specifically, regular body composition data can help members stay engaged, which operators may find supports retention, attendance, and the uptake of premium services such as personal training and nutrition coaching.

Furthermore, the InBody result sheet, with its clear, visual breakdown of muscle mass, fat, and visceral fat, serves as a powerful motivational tool that a standard scale cannot replicate. In addition, displaying InBody scanning as part of a gym’s new normal safety protocol communicates a level of professional, evidence-based care that differentiates premium fitness facilities from competitors who offer only standard hygiene measures.

FOR GYM OWNERS: INBODY DEPLOYMENT IN YOUR FACILITY
InBody scanners are currently deployed in fitness centres, corporate wellness programmes, and sports medicine clinics across India, including leading chains in Mumbai, Delhi, Bengaluru, Chennai, and Hyderabad. The device requires no specialist training to operate — any staff member can administer a scan in under 60 seconds after basic orientation.

For information about deploying InBody in your gym or fitness facility, contact InBody India directly.

The Returning Member Protocol: A Step-by-Step Clinical Framework

To bring together all 12 safety protocols and the body composition screening requirement, the following step-by-step framework provides a complete returning-member onboarding process for Indian gyms operating in the new normal. Moreover, this framework can be implemented immediately and adapted to gyms of any size.

1. Pre-visit booking confirmation: Member books a slot via app, phone, or website. Automated health questionnaire sent for completion before arrival. Membership access conditionally issued only on questionnaire completion.
2. Entrance screening: Temperature check on arrival. Staff visually confirms questionnaire completion and reviews responses for red-flag symptoms. Member sanitises hands before entering the gym floor.
3. Returning member assessment (first visit only): 60-second InBody body composition scan. Review of results by qualified fitness professional. Personalised exercise intensity recommendation based on current SMM, VFL, PBF, and ECW/TBW ratio. Written programme summary provided.
4. Session conduct: Member maintains 2-metre spacing. Disinfects equipment before and after use. Masks worn in common areas. Time-limited sessions enforced (60–75 minutes maximum during high-capacity periods).
5. Post-session: Member sanitises hands on exit. Equipment cleaned by member and confirmed by staff before the next booking slot begins. Changing room access via timed slot if applicable.
6. 8–12 week review scan: Member returns for a follow-up InBody scan. Results compared to baseline. Programme adjusted based on changes in SMM, VFL, and InBody score. Member motivation maintained through visible, objective progress data.

Frequently Asked Questions

Key Takeaways: Gym Safety in India’s New Normal

• Gym safety in the new normal requires two parallel frameworks: an environmental hygiene and infection control protocol, and a clinical body composition screening protocol for returning members.
• The 12 non-negotiable protocols are: entrance screening, capacity control, sanitisation stations, equipment disinfection, ventilation, social distancing, face covering policy, shared amenity management, staff training, communication strategy, COVID case response plan, and body composition assessment.
• Returning members are not resuming training; they are beginning training. Extended lockdown inactivity can produce losses of muscle mass and gains in fat, including visceral fat, that may change safe exercise prescription.
• An InBody body composition scan in 60 seconds gives fitness professionals the six clinical markers they need to prescribe exercise safely: SMM, VFL, PBF, segmental lean analysis, ECW/TBW ratio, and InBody Score.
• Body composition screening can support member engagement and retention in addition to its primary role as a clinical safety tool.
• The returning member protocol (booking, screening, InBody assessment, session, and 8–12 week review) is a practical operational framework that any Indian gym can adapt and implement.

Make Your Gym Clinically Safe, Not Just Visibly Safe

Surface sanitisation and temperature checks are visible. They communicate safety to members. However, the bigger clinical risks, such as deconditioning, visceral fat accumulation, and possible post-COVID muscle loss, are invisible without the right tools. InBody makes them visible in 60 seconds. For every returning member, that data is the difference between a programme that is safe and one that is merely optimistic.

Step up your gym experience with InBody.

Gyms should now be an ‘essential service’

What the ‘New Normal’ May Look Like

Find an InBody Scanner Near You

References

1. Press Information Bureau, Government of India (Ministry of Home Affairs). Government of India issues Orders prescribing lockdown for containment of COVID-19 Epidemic in the country. Press release, New Delhi, 24 March 2020 (order in force for 21 days with effect from 25 March 2020). MHA (PDF)
2. Press Information Bureau, Government of India (Ministry of Home Affairs). MHA issues Unlock 3 Guidelines, opens up more activities outside Containment Zones. Press release, New Delhi, 29 July 2020 (yoga institutes and gymnasiums allowed to open from 5 August 2020). MHA (PDF)
3. Deurenberg P, Deurenberg-Yap M, Guricci S. Asians are different from Caucasians and from each other in their body mass index/body fat per cent relationship. Obes Rev. 2002;3(3):141-146. PubMed · DOI
4. Ministry of Health & Family Welfare, Government of India, Directorate General of Health Services (EMR Division). Guidelines on Preventive Measures to Contain Spread of COVID-19 in Yoga Institutes & Gymnasiums. 3 August 2020 (archived copy of the MoHFW PDF). Archived PDF
5. Breen L, Stokes KA, Churchward-Venne TA, Moore DR, Baker SK, Smith K, Atherton PJ, Phillips SM. Two weeks of reduced activity decreases leg lean mass and induces “anabolic resistance” of myofibrillar protein synthesis in healthy elderly. J Clin Endocrinol Metab. 2013;98(6):2604-2612. PubMed · DOI
6. Krogh-Madsen R, Thyfault JP, Broholm C, Mortensen OH, Olsen RH, Mounier R, Plomgaard P, van Hall G, Booth FW, Pedersen BK. A 2-wk reduction of ambulatory activity attenuates peripheral insulin sensitivity. J Appl Physiol (1985). 2010;108(5):1034-1040. PubMed · DOI
7. Bakaloudi DR, Barazzoni R, Bischoff SC, Breda J, Wickramasinghe K, Chourdakis M. Impact of the first COVID-19 lockdown on body weight: a combined systematic review and a meta-analysis. Clin Nutr. 2022;41(12):3046-3054. PubMed · DOI
8. Yajnik CS, Fall CH, Coyaji KJ, Hirve SS, Rao S, Barker DJ, Joglekar C, Kellingray S. Neonatal anthropometry: the thin-fat Indian baby. The Pune Maternal Nutrition Study. Int J Obes Relat Metab Disord. 2003;27(2):173-180. PubMed · DOI
9. Mittleman MA, Maclure M, Tofler GH, Sherwood JB, Goldberg RJ, Muller JE; Determinants of Myocardial Infarction Onset Study Investigators. Triggering of acute myocardial infarction by heavy physical exertion. Protection against triggering by regular exertion. N Engl J Med. 1993;329(23):1677-1683. PubMed · DOI
10. Lear SA, Humphries KH, Kohli S, Chockalingam A, Frohlich JJ, Birmingham CL. Visceral adipose tissue accumulation differs according to ethnic background: results of the Multicultural Community Health Assessment Trial (M-CHAT). Am J Clin Nutr. 2007;86(2):353-359. PubMed · DOI
11. World Health Organization. Coronavirus disease (COVID-19): Contact tracing. Questions and answers, 31 May 2021. WHO
12. Centers for Disease Control and Prevention. Hand Sanitizer Guidelines and Recommendations (Clean Hands). Page last updated 12 March 2024. CDC
13. Kampf G, Todt D, Pfaender S, Steinmann E. Persistence of coronaviruses on inanimate surfaces and their inactivation with biocidal agents. J Hosp Infect. 2020;104(3):246-251. PubMed · DOI
14. Mutsch B, Heiber M, Grätz F, Hain R, Schönfelder M, Kaps S, Schranner D, Kähler CJ, Wackerhage H. Aerosol particle emission increases exponentially above moderate exercise intensity resulting in superemission during maximal exercise. Proc Natl Acad Sci U S A. 2022;119(22):e2202521119. PubMed · DOI
15. Jang S, Han SH, Rhee JY. Cluster of coronavirus disease associated with fitness dance classes, South Korea. Emerg Infect Dis. 2020;26(8):1917-1920. PubMed · DOI
16. World Health Organization. Coronavirus disease (COVID-19): Masks. Questions and answers, 12 October 2023. WHO
17. Schumm B, Heiber M, Grätz F, Stabile L, Buonanno G, Schönfelder M, Hain R, Kähler CJ, Wackerhage H. Respiratory aerosol particle emission and simulated infection risk is greater during indoor endurance than resistance exercise. Proc Natl Acad Sci U S A. 2023;120(9):e2220882120. PubMed · DOI
18. Hopkins SR, Dominelli PB, Davis CK, Guenette JA, Luks AM, Molgat-Seon Y, Sá RC, Sheel AW, Swenson ER, Stickland MK. Face masks and the cardiorespiratory response to physical activity in health and disease. Ann Am Thorac Soc. 2021;18(3):399-407. PubMed · DOI
19. InBody Co., Ltd. The Professional’s Guide to the InBody Result Sheet. Manufacturer document (uploaded 2018), not peer-reviewed; cited only for the device’s own reference ranges (ECW/TBW 0.360-0.390; visceral fat area 100 cm² line). InBody (PDF)
20. InBody Co., Ltd. InBody120 User’s Manual (BM-ENG-F3-E-180701), 2018. Manufacturer document, not peer-reviewed; cited only for test-preparation instructions. InBody (PDF)