How much sleep do you need?
"Eight hours" is an average, not an answer. Your real number depends on your chronotype, sleep efficiency, and which of the ten sleep types fits you. Find it in two minutes.
The 8-hour rule is an average
What actually determines your number
Signs you're not getting enough
Frequently asked
How much sleep do most adults need?
Most adults need 7 to 9 hours. A small share genuinely need 6 or can use 10 — but the only way to know which you are is to track how you actually feel, not what an average says.
Is 6 hours of sleep enough?
For most people, no — even when it feels fine. True short sleepers exist but are rare (estimated under 3% of the population). Most people running on 6 hours are accumulating debt they don't notice until it crashes them.
How do I know if I'm getting enough sleep?
Reliable signs: you wake without an alarm at roughly the same time on weekends, you're alert by mid-morning without caffeine, you don't crash in the afternoon. The quiz reads these patterns for you.
What if I sleep enough but still feel tired?
That usually means the hours are there but the type or timing is wrong for you. The quiz identifies which of the ten sleep types fits — and what's actually draining you.