The 7–9 hour rule
Adults function best with 7 to 9 hours of sleep. Less than 6 hours consistently impairs emotional regulation and focus.
Rest well
Track your sleep
Sleep is the foundation of mental health. Log bedtime, wake time, and quality to see how rest shapes your week.
Log last night's sleep
Quality sleep is the foundation of mental wellbeing.
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avg—/5
quality You slept 8h — adults need 7–9h for optimal mental health.
Sleep quality
Quality over quantity
Eight fragmented hours can feel worse than six solid ones. Your subjective quality rating captures what duration alone misses.
Sleep & mood
A single bad night increases irritability. Chronic sleep debt is one of the strongest predictors of depression and anxiety.