What a great weight loss question:
the"PRANAYAM" as they r widely known, takes care of exceessive weigt gain, eyesight and also heart ailments in many patients. people have understood the benefits within weeks of starting these exercises, and i beleive u will 2.
1. sit with an erct posture on the ground. both legs crossed. this is the common position in all yogic asanas. then take a deep breath. this should then be forcefully expelled from your nose by applying force on your stomach. follow this action continuously @ 2/sec. in the beginning do only 30 reps at a stretch. then rest for a while. restart and repeat the cyle for 5-10 times. do not exert yourself. you will succeed gradually. as ur capacity increases do these sets for 10-15 mins daily, increasing the reps and sets accrdng 2 ur convinience
2. leg raises while lying down and twisting exercises also form an essential part of yoga. but i am sure u must be knowing that already. the pranayam is as na effective substitute for overweight/obese people, or those suffering fro joint aches who cant afford to do cardiovascular workouts.
note. these exercises need to be done on an empty stomach. so it is important that u havent eaten anything 3-4 hrs prior to doing these exercise. hence early morning is the best time to perform yoga. 1/2 na hour will put u enroute to a life of healthy living