Delayed Sleep Phase Syndrome (DSPS) is a circadian rhythm sleep disorder in which a person’s internal body clock is shifted later than what society expects. People with DSPS naturally fall asleep very late (often 2–6 am or later) and struggle to wake up early, even when they are exhausted. Crucially, this is not insomnia due to anxiety or poor sleep habits. When allowed to follow their own schedule (e.g. sleeping from 3 am–11 am), people with DSPS usually sleep normally and well. 🩷What’s actual

1.5K views · 17 reactions | During the night, you cycle through 5 stages of sleep every 90 to 110 minutes. Here's what happens during each of these stages: | Peak | Facebook