Bikram Yoga burns anywhere from 500-1000 calories depending on how hard you work and what your weight is. It most certainly helps you burn fat if you eat less than what you burn. You can walk 30-40 minutes a day - but that will burn a small fraction of Bikram will burn. People who don't do yoga - fail to know enough to say much about it. Ask your yoga instructor - they will tell you much more about it.
Yoga is a wonderful source of exercise. It is not advised to try to get fat by yoga. People who practice yoga find that they burn fat, not gain it.
There are a lot of ways to burn tummy fat, one cheap and easy way is to go running, running makes you burn fat faster not only on your tummy but in your entire body. You can also do sit ups or plank exercises. For me the best exercise that work burn tummy fat is doing yoga and pilates. Pilates is more core centered.
yes they do, but you can intensify it by doing a squat thrust into a star jump which will burn fat quicker.
try doing leg kicks
If you are doing a rogorous excercise like jogging or something and sweating you are burning fat but just sitting in a sauna and sweating will not burn fat
Yes
I'd recommend just doing cardio.
You raise your legs while doing a crunch, so I am thinking that you mean sit-ups. Yes, doing sit-ups off the couch does burn stomach fat.
Try including some abs workout in your routine. Doing abs every alternate day should help you burn fat around abdominal region.
Doing exercises that work multiple muscle groups at once can really help to burn more fat in a shorter period of time, and this will in turn help people who are overweight to burn more fat.
Yes, it is recommended to flex regularly to burn as many calories as you can
Fat HAS energy. Doing exercises, making sure that you're SPENDING more energy than you're eating burns fat.