Eat when hungry, sleep when tired. That’s how the saying goes. It may sound very zenny and wise, but it’s actually a massive pain in the ass.
The fact is that being unanchored in time is not as easy as it sounds. You end up napping a lot and never being sure if you’re fully rested. You end up being hungry a lot and not knowing if it’s meal-time or snack-time, or if you’re eating too much or not enough. It’s hard to make plans because you need a few days to adjust your schedule to make sure you’re well-rested at a certain time.