There's a big difference in fasting for a day and fasting for several days at a time.
Fasting is not dangerous and there are many health benefits if you do some research. I fast on alternate days and feel better than I have ever done.
Fasting for any length of time would be dangerous to your health, since your body needs regular nourishment to stay healthy.
Typically, the weight lost during a fast is water weight.
i sometimes fast but i fast twice a week not more.
cause i think its would be unhealthy
I did water fasting for 4 days followed by a week of low-calorie diet. I lost 8lb 6oz.
I know a couple of other people who did longer fasts and not only lost some weight but also relieved some health problems. But me and my buddies did that under supervision, with medical checkups before and during the course. I wouldn't do that on my own.