Comment by adiM

It will be fascinating if there were a way for you to record the actual time when you do eat lunch (without the time being revealed to you; say a Rasberry Pi where you press a switch to record current time but it has no display). I am curious how much our body clock synchronizes with real time. I see that in my kids, who don't yet know how to read time. But they are hungry right at noon and 7pm, and will get cranky if they don't get something to eat within 15 min of that. Do adults retain such strong internal body clocks?