Has anyone had success with intermittent fasting?

@SW-User i have. just was wondering if anyones had any success with it and how many hours they went. i fasted once completely except for one herbalife shake for three days and crashed my metabolism. didnt lose a pound and gained ten pounds afterwards. just want to hear peoples experience. (to lose wieght in case i read your question wrong) i think it can be a spiritual thing too as well.

@Penny oh. I know that spiritual and religious part as it is done by many where I live. I think everyone can't tolerate fasting. If your health is going bad , don't fast.