I don't necessarily fast on purpose, but rather because it's a side effect of my routine. I'll eat enough steak and eggs for breakfast to satiate me for the day, mostly because I dislike the food prep, cooking, and cleanup that comes with eating.

If I do develop an appetite later on, I'll try to not eat anything too late, and will usually have a glass or two of water instead, because it seems to disturb my sleep. Bowel movements are like clockwork, too.

If I do make a poor dietary decision and feel like I need to abstain from consumption the next day, then that's what I do, and it is not difficult at all. I believe that the steak and egg routine eliminated the craving for sugar, making fasting easier, and also find that my mental clarity is higher than normal. My longest period of fasting was two days and I felt more clear-minded and sharper than before, making the fasting case more provocative than ever. Hell, eating nothing but steak and eggs helped dramatically with improving mental clarity in general.