I've been interested in this idea of intermittent fasting for some time now - ever since I saw that it could actually boost your immune system by pruning old immune cells when fasting and then replacing them with new ones when nutrients are added back into your system.

Fasting is very challenging though. Like you said, your body tends to crave food at certain times based on your regular routines and schedules. The longest I was ever able to fast was 2 days. I found that my mind thought about food all day long and all delicious unhealthy food too (pizza, burgers, chocolate cake, fried chicken...etc) haha.

Good on you for taking up this challenge. Good luck. I'm interested in reading how it goes for you!