This culture devalues sleep to the extent that admitting you slept well is actually met with hostility.
It’s more socially acceptable to say “God, I’m so tired today” than it is to say, “I have plenty of energy,” which will always earn you a dirty look.
If you say “Good morning” without sounding as though you’re about to take a bath with a toaster, then, well, you’re a perky fucker, aren’t you?
Eating well and exercising never get reactions like this.