Crazy to me there's no precedent to talk of stress and sleep together. The word stress doesn't appear in this piece.

Stress and sleep are the same physiological system. The best way to recover from stress is to sleep. Not surprisingly, increasing stress also inhibits memory, learning, and attention. So by driving a stressful lifestyle with few hours of sleep, students are working against the need to strengthen the brain. Sleep literally seems to refresh us, consolidating new memories and washing away built up toxins.

Don't set an alarm clock - set a time to sleep.