Most yoga burns fewer calories than people expect — a general hatha class is in the region of a brisk walk, not a run — and no form of exercise is an efficient way to lose weight compared with changing what you eat. If weight loss is the goal and you are choosing an activity purely for its energy cost, yoga is not the best choice and resistance training plus walking probably is.
That is the direct answer. The indirect case is more interesting and is the reason plenty of people who practise do end up in a different place.
Why the direct effect is small
Energy expenditure in a typical class is modest. Faster styles — vinyasa, power yoga — sit higher, and even then they are comparable to a moderate cardio session rather than an exceptional one. Longer-held and restorative styles are lower again.
The broader point applies to all exercise: it is much easier to eat four hundred calories than to work off four hundred calories, and appetite tends to rise to meet expenditure. Exercise is excellent for many things. Weight loss is the one where it most consistently underdelivers relative to expectation.
Anyone advertising yoga as a weight loss method, with a number attached, is either selling a very unusual class or not being straight with you.
The indirect effects that do matter
Sleep. Poor sleep is associated with increased appetite and with worse food choices the following day. If a practice improves your sleep — and that is one of the better-supported effects — it is acting on weight through a real mechanism, just not the one on the poster.
Stress eating. Not everyone eats under stress, but a lot of people do, and it is a substantial share of the problem for them specifically. A regular practice that reduces day-to-day tension addresses that directly.
Noticing. The most-cited mechanism in the research on mindful eating, and the hardest to measure. People who practise regularly tend to report eating more deliberately. Whether that is the practice or the kind of person who takes it up is not something the studies can separate.
Being able to do other exercise. This is the underrated one. Hips and ankles that move properly make walking, running and lifting easier and less likely to be interrupted. Yoga's contribution to weight is often through making the things that actually shift weight more sustainable.
Showing up at all. For people who find gyms unpleasant, an activity they do not dread is worth more than a theoretically superior one they avoid.
What to do if weight is the goal
Be honest that the plan is mostly about eating, and build the exercise to support it rather than to replace it.
Include resistance work, twice a week if possible. It preserves muscle during weight loss, which is what keeps the result from being mostly water and lean tissue.
Walk. Unglamorous, and by some distance the most sustainable form of expenditure most people have available. In the UAE this means treating November to March as the season for it and accepting an indoor substitute in the summer.
Use yoga for mobility, sleep and stress, which is what it is good at. Twice a week is plenty in this plan.
And be careful with the goal itself. Plenty of people arrive wanting to lose weight and after a few months are more interested in what they can do than in what they weigh. That is not a failure of the goal; it is generally a better one.
Questions people ask
How many calories does yoga burn?
Less than most people expect. A general hatha class is broadly comparable to a brisk walk; faster vinyasa or power styles are higher but still in the range of moderate exercise rather than vigorous. Restorative and yin styles are lower again.
Is yoga good for weight loss?
Not directly, and not compared with changing what you eat. Its useful contributions are indirect: better sleep, less stress eating, and better mobility that makes walking and resistance training easier to sustain. Those matter, and they are not what the marketing describes.
What is better for weight loss, yoga or the gym?
For weight specifically, resistance training plus walking, with the main work done through diet. Resistance training preserves muscle during weight loss, which materially changes the quality of the result.
How often should I practise if weight is my goal?
Twice a week is enough in a plan where yoga is supporting mobility, sleep and stress rather than doing the main work. Adding more yoga at the expense of resistance training or walking is unlikely to help.
A senior yoga teacher at IndieVeda, teaching one-to-one sessions live from India.