In the hospital I was tube fed for five months
I fasted for 5 days once. Had a terrible headache from day 2, appalling on day 3 morning, but then it went, and a complete change came over me. I felt so full of energy and 'wellness' that I felt like I had at 10 years old, it was quite amazing. Although hungry for 2 days, that went on day 3, when there was no hunger, and I stopped wanting to eat. I stopped fasting because of concerns about what might happen if I continued. I have often wanted to do it again, but am a bit wary in case it lowers my metabolic rate making me more liable to put on weight afterwards.
I find one day fasts good.<br />
I tried a 2 day fast once and it was bad. Lowered my metabolism and that caused me to put on weight. Took me a while to regain my metabolism.