my requirements for sleeping at night is the pillow cool enough? are my legs positioned so they don't put too much weight on each other? are my arms tucked in nicely and not at odd angles? can I stop thinking about the day's events? is enough of my body out from under the blanket that I won't overheat? are my toes safely tucked in to hide them from monsters?
my requirements for sleeping in the morning is the surface vaguely horizontal and not made entirely out of hornets