Hot yoga is yoga practised in a room heated to about 35 to 40 °C (95 to 105 °F), often with added humidity, so that you sweat heavily and the muscles feel looser than they would in a cool room. It is a studio thing: the heat needs a room built for it, a teacher watching, and water within reach. This post explains the styles, what the heat does and does not do, what to look for in a studio, who should ask a doctor first, and the honest case for the other kind of yoga, the slow kind on your own floor, which is what CalmSpace.ai offers. We are not a studio and do not pretend to be one.

What is hot yoga?

The name covers several styles that share a heated room.

Bikram-style is the fixed sequence most people picture: the same 26 postures and two breathing exercises, in the same order, for 90 minutes, at about 40 °C and 40 percent humidity. Many studios now teach the sequence under other names.

Hot vinyasa or hot power is flowing yoga, with movement linked to breath and a faster pace, in a room usually a little cooler, around 32 to 38 °C. Sequences vary by teacher.

Hot yin is the opposite: long, passive holds on the floor, in moderate heat, aimed at the connective tissue rather than the muscles.

Warm yoga is a gentler room, say 27 to 32 °C, used by studios who want the looseness without the intensity.

Ask which one a class is before you go. A 90-minute fixed sequence at 40 °C and a 60-minute warm flow are different evenings.

What does the heat do?

Warm muscles stretch more comfortably, so people often get further into a pose in a hot room than a cold one, and the sweat and the effort make the class feel like a workout. The heat also raises the heart rate on its own, which adds to the exertion. Those are the reliable effects.

The ones to treat with caution are the claims. Sweating does not "detox" anything; the liver and kidneys do that, and sweat is mostly water and salt. Getting further into a pose because the tissue is warm is not the same as being more flexible, and it is possible to overstretch in a hot room because the usual warning signs arrive later. The honest summary is that hot yoga is a demanding, enjoyable form of exercise for people who like it, not a treatment for anything.

Who should check with a doctor first?

Anyone who is pregnant; anyone with a heart condition, high or low blood pressure, or a history of fainting; anyone with a condition affected by heat or dehydration, including some medications that affect it; and anyone who has had heat exhaustion before. Drink water before, during and after, go slowly in the first few classes, and leave the room if you feel dizzy, sick or light-headed, whatever the class culture says about staying. Your body in that room is yours, not the teacher's.

What should I look for in a studio?

If you are searching for hot yoga near you, the things that matter are not the ones on the first page of a listing.

  • The temperature and humidity, stated plainly, and whether the room is heated with infrared panels or forced air; both work, and they feel different.
  • A beginner or warm class to start with, rather than the 40 °C sequence on day one.
  • A teacher who tells you to rest or leave when you need to, and means it.
  • A single-class or short-trial price so you can find out whether you like it before you buy a block.
  • Showers, because you will need one.

A good studio will answer all of that on the phone.

When is gentle yoga at home enough?

More often than the studio industry would like. If what you want from yoga is a body that is less stiff in the morning and less restless at night, a few slow poses with the breath on your own floor do that, and the heat adds nothing to it. If you want sweat, a crowd, a teacher's eye on your alignment and a hard class, hot yoga gives you that, and a web page does not.

The at-home kind suits beginners, people who sit most of the day, people who cannot get to a 6 pm class, and anyone recovering from a hard week rather than training for something. It is also what to do on the days between studio classes. The gentle yoga page has a five-minute morning sequence and a seven-minute before-bed one, every pose with an easier version. If a stronger practice at home is the aim, core yoga at home is six slow poses for the middle of the body, with no heat and no equipment.

Gentle yoga with Bliss

CalmSpace.ai is a calm app for iPhone, Apple Watch and the web with Bliss, a voice companion who remembers you. In the library, yoga is a set of gentle guided sessions in Bliss's voice, each pose with a picture, short enough to do before a shower or after the lights are off. There are no classes, no studio, no camera and nobody watching. The breath that makes a hot class bearable is the same breath that makes a gentle one work, and in Breathe together, which is free, Bliss counts it out loud. You can also talk to her afterwards about how the body felt, and she remembers, so a session a week later can start from there. The basics of the library are free; Premium opens the full library.

Nothing here is medical advice. If a pose hurts, stop, and see a professional who can watch you move. CalmSpace.ai is a calm app, not a medical service.

Questions people ask

How hot is hot yoga?

Usually 35 to 40 °C (95 to 105 °F), with the Bikram-style sequence at about 40 °C and 40 percent humidity. Warm classes run cooler, around 27 to 32 °C.

Is hot yoga good for beginners?

It can be, in a warm or beginner class with a teacher who lets you rest. The full 40 °C sequence is a hard first class. Gentle yoga at home is the easier place to learn the poses and the breath.

Does hot yoga detox your body?

No. Sweat is mostly water and salt; the liver and kidneys handle the rest. Hot yoga is a demanding form of exercise, not a cleanse.

Does CalmSpace.ai have hot yoga classes?

No. It has gentle guided yoga sessions in Bliss's voice to do at home, with a picture of each pose, and no studio, classes or heat.

CalmSpace.ai is a wellness app, not a medical service, and Bliss is not a therapist. If you are in crisis, contact the crisis line for your country; in the United States, call or text 988.