Hot Yoga Statistics

How popular is hot yoga, and what are its measurable effects? Reliable national data establish broad U.S. yoga participation, but do not support a precise current count or national percentage of Americans practicing hot yoga specifically. A small 2015 research study of a 90-minute heated Bikram class documented substantial increases in core temperature. Sweating is primarily a cooling mechanism, not a proven method to detoxify the body.

Editorial correction, October 2026: This article previously estimated that 36% of yoga practitioners practiced hot yoga and extrapolated a figure of 13.8 million people. Neither figure could be substantiated as a representative national hot-yoga estimate. Earlier unsupported revenue, retention, demographic, calorie, heavy-metal and heating-cost figures have been removed, along with social embeds repeating unverified claims. We now distinguish documented measurements from unknown market data.

Hot yoga: verified findings and what remains unknown

How many Americans practice hot yoga?

The best-known Yoga Alliance 2022 national study estimated 38.4 million U.S. yoga participants across styles. It does not establish the 36% hot-yoga share that appeared in an older version of this article. A valid national hot-yoga estimate would require a representative survey that identifies heated practice, defines its variants, and publishes the relevant denominator. The national percentage remains unverified here.

What counts as hot yoga?

Hot yoga is a broad term for postural yoga taught in a heated room. Formats include Bikram-inspired classes, heated Vinyasa and some Power Yoga. The presence of heat does not imply that all classes have identical room temperatures, humidity, sequences or durations. For a style overview, see Hot Yoga and Bikram Yoga.

How hot does the body get in hot yoga?

A 2015 American Council on Exercise (ACE)-sponsored study followed 20 participants in a 90-minute Bikram class, conducted at approximately 105°F with 40% humidity. Researchers reported average maximum core temperatures of 103.2°F for men and 102.0°F for women. Seven of the 20 reached a core temperature above 103°F, and one reached 104.1°F. These numbers describe that small study and class format, not every hot yoga participant or session. The study authors raised concerns about heat illness. Read the ACE study summary and methods.

How much do people sweat during hot yoga?

Sweat rates vary with ambient temperature, humidity, activity, acclimatization, body size, medications and individual physiology. It is misleading to assign every student a fixed one-to-two-liter-per-hour sweat loss. Hydration needs are individual, and drinking large amounts without regard for electrolyte balance can also be unsafe.

Does sweating during hot yoga remove toxins?

Evidence does not support portraying hot yoga as a medically meaningful detoxification therapy. The Cleveland Clinic's overview of sweat explains that perspiration is mostly water and functions to control body temperature; the liver and kidneys perform most of the body's waste-processing work. Trace substances may be measurable in sweat, but their presence does not mean intense sweating clears toxic exposures from the body. Sweat concentrations of arsenic, lead or other elements cannot responsibly be converted into claims of clinical detoxification from yoga without representative human evidence.

How many calories does hot yoga burn?

Energy expenditure depends on movement, duration, body size and individual effort. Heat and visible sweating are not themselves reliable calorie counters, and published estimates from one style or sample should not be advertised as a universal hot-yoga burn rate. Our yoga calorie calculator provides an estimate, not a personal metabolic measurement.

What are the benefits and risks of heated classes?

General yoga research suggests possible benefits for wellness, mobility and stress management, yet those findings do not establish that adding heat produces superior medical outcomes. The NCCIH yoga safety guidance recommends qualified instruction and modifications based on age, health status and experience. Heated sessions add practical risks of dehydration, lightheadedness and excessive heat exposure. Cleveland Clinic's hot-yoga guide discusses precautions.

Begin gradually, rest when needed, and leave a hot room promptly if you feel faint, dizzy, nauseated, unusually weak, or overheated. People with heat-sensitive conditions or relevant medical concerns should discuss heated practice with a qualified healthcare professional. Avoid pushing deeper into a position solely because warm muscles allow it.

How many hot yoga studios are there, and how much do they earn?

We could not substantiate a current, nationwide total of dedicated hot-yoga studios, average studio revenue, member retention, class attendance, or an expansion rate using comparable public data. Broad fitness industry projections do not automatically describe hot yoga. Studio counts depend on whether mixed-temperature studios, franchises, temporary spaces and independent instructors are included.

What is hot yoga's environmental impact?

Heating and ventilation consume energy, but the electricity used by a given studio depends on space, climate, heating system, insulation, class schedule and local energy mix. National claims that a hot studio uses a specific percentage more electricity or water than an unheated studio require audited, comparable measurements. Practical options include monitoring building energy use, efficiently managing ventilation and schedules, and transparently measuring utility consumption rather than implying any one universal footprint.

Frequently asked questions

Is hot yoga the same as Bikram Yoga?

No. Bikram is a particular standardized heated sequence. Hot yoga describes several formats taught in heated spaces.

Does hot yoga always make you burn more calories?

No fixed increase can be inferred from room temperature alone; the movement, duration and individual all matter.

Is more sweat evidence of better detoxification?

No. Sweat is mainly a thermoregulation response, not a measure of toxin removal.

References

• ACE (2015): Bikram Yoga core-temperature study, 20-person sample.
• Cleveland Clinic: Sweat, functions and limitations.
• Yoga Alliance: Yoga in the World, 2022 general-yoga participation study.
• NCCIH: Yoga effectiveness and safety.

Related: Yoga Demographics in America and Introduction to Hot Vinyasa Yoga. About the author: Jack Utermoehl.