Hot Yoga refers broadly to any yoga class practiced in a room artificially heated well above normal room temperature, typically to somewhere between 35°C and 41°C (95°F to 105°F), often with elevated humidity as well. The heat is intended to increase muscular flexibility, promote significant sweating, and raise the overall physical intensity of the practice. The best-known and most historically specific form of Hot Yoga is Bikram Yoga, a fixed 26-posture sequence, though the broader “hot yoga” label today covers a range of heated variations of Vinyasa, Power Yoga, and other styles offered under different names.
Origins
The original, codified form of heated yoga was developed by Bikram Choudhury, an Indian-born yoga teacher who began teaching in the United States in the early 1970s and founded Bikram Yoga as a franchised, trademarked style built around a fixed sequence of 26 postures and two breathing exercises, always performed in a room heated to a specified temperature and humidity. Choudhury built an extensive network of licensed studios and certified teachers through the 1990s and 2000s. In subsequent years, allegations of misconduct against Choudhury led many studios and teachers to distance themselves from the Bikram brand specifically, while continuing to teach heated yoga classes — sometimes his original 26-posture sequence, sometimes independently designed sequences — under alternative names such as “hot yoga” or studio-specific branding.
The Bikram Sequence
The original Bikram sequence consists of a fixed series of 26 postures, each performed twice, along with two breathing exercises, always in the same order and always within a heated, humid room. Advocates of the fixed sequence argue that its consistency allows practitioners to track physical progress precisely over time, since the variables of posture and order remain constant across every class, regardless of studio or teacher.
How Hot Yoga Classes Are Structured
Beyond the specific Bikram format, many studios today offer “hot” versions of other styles — heated Vinyasa, heated Power Yoga — combining an elevated room temperature with a freely designed or teacher-varied sequence rather than a fixed set of postures. Regardless of the specific format, classes typically run 60 to 90 minutes, and practitioners are consistently advised to hydrate well before, during, and after class given the significant fluid loss through sweating in a heated room.
Physical Considerations
Heat is understood to increase tissue pliability temporarily, which proponents argue allows for a deeper range of motion in stretches, though this same effect can also increase the risk of overstretching beyond a joint’s safe limit if a practitioner is not attentive to sensation. The combination of heat, humidity, and physical exertion places meaningfully greater demand on cardiovascular and thermoregulatory systems than an unheated class of similar intensity. As with any physically demanding practice, individuals with underlying health conditions, and pregnant practitioners in particular, are generally advised to consult their healthcare provider before beginning a hot yoga practice.
Common Misconceptions
A common misconception treats “Hot Yoga” and “Bikram Yoga” as interchangeable terms. Bikram Yoga refers specifically to Choudhury’s fixed, trademarked 26-posture sequence taught under his branding, while “hot yoga” is a broader, generic term covering any heated class, which may follow an entirely different or freely varied sequence.
Another misconception assumes that sweating heavily during a heated class is itself a primary indicator of the workout’s effectiveness or of significant “detoxification.” While heat increases sweat output and cardiovascular demand, the body’s detoxification processes are primarily handled by the liver and kidneys rather than through sweat, and the heat itself does not substitute for or accelerate strength and flexibility gains beyond what consistent practice would otherwise produce.