I don't know about you guys, but if I don't eat breakfast and lunch, I get a headache in the afternoon, and have serious problems concentrating, and very little energy. My conclusion is that either I am doing something wrong, or intermittent fasting only works if one stays in bed the whole day.
2. Your body will get used to fasting if you do it repeatedly and it will become effortless (this from personal experience so I might be doing something different without realizing)
At least in the case of ramadan fasting, the difference is that you eat (and drink) nothing at all from waking up until night. This way the digestion system never gets started, the stomach kind of just shrivels up and you never actually feel much hunger.
Incidentally, Islamic practice is to fast two days of the week too (outside of the month of ramadan).
I don't know about you guys, but if I don't eat breakfast and lunch, I get a headache in the afternoon, and have serious problems concentrating, and very little energy. My conclusion is that either I am doing something wrong, or intermittent fasting only works if one stays in bed the whole day.