When 12ish I realized that my mental clarity was actually better throughout school when I skipped breakfast because I was too late; and initially I just thought

When 12ish I realized that my mental clarity was actually better throughout school when I skipped breakfast because I was too late; and initially I just thought this: it was due to sleeping longer. But I observed the same thing later in high school when I got up on time but forgot to buy milk and hence went to school fasted. Back then, I thought "break(ing your)fast" was somehow important for your energy levels at the start of the day (good PR!) so I was hesitant to follow really through and I guess the latent sugar cravings did the rest (but I remember not being "hangry" as others described it). Now, after experimenting with a lot of regiments, I know that I'm far better off by "skipping breakfast". As a general rule of thumb giving your body a rest time of 12 hours and not eating 2 hours before sleeping gives your body an additional strong signal for its diurnal coordination. That being said I knew a very athletic guy who before sleeping devoured 3000kcal (he barely ate throughout the day) and then judging by his exceptional body composition and athletic achievements could recover excellently.