Man I can do IF no problem but I don't think I could go a whole day. Unless I was extremely busy in order to keep my mind off eating. I have been wanting to try and ADF just as a mental strength challenge kind of thing. You ADF? If so, what have your results been like?
I get better results from ADF for whatever reason. Then I can also binge eat the following days. The way I did I was trying to recomp, so 3 days a week I would fast, the other 4 would be my lifting days. My weight went down slower but I didnt lose any muscle. The fat seemed to fall off quickly, tho, and mirror results came quick. I would eat like I was bulking on my "eat" days. The secret is to use psyllium husk throughout the day when u get hungry and your trying to fast. Usually I'll take a bunch one time in the early day and then I guess b/c my insulin never raises from food, I dont get hungry the whole day. I like it better that IF because when i did IF i was using a 4 hour window to eat, and its like the hell of fasting every day. With ADF, most of the week im eating, but Im still at >9,000 cal deficit from those 3 days that I can either make up on my eat days or let them go. I think you also get some type of beneficial rebound effect at sparing muscle from doing ADF over regular calorie restriction/ IF method. Your body just had an awesome workout and the next day theres no food... so it tries harder to keep the muscle.