Eat when you are truly hungry.
Don't eat just because...
It's "time" to eat
You're bored
You're anxious
You're depressed
You're thirsty
You're sleepy
Discussion
Some people over think it but your body knows.
Sometimes sleepiness is a hunger signal though
The “three meals a day” is a pretty ingrained psyop, generally speaking.
Not sure on last point. I eat when hungry but also if I yawn middle of the afternoon, an egg or some fatty meat works a treat. My body sometimes says tired before hungry