toolsPulse tools
Sleep cycle / bedtime
Count ~90-minute cycles backward from a wake time. A reminder to sleep, not a lab PSG.
Result
Try 22:00
- 22:00 (6 cycles)
- 23:00 (5 cycles)
- 01:00 (4 cycles)
How to use
- 1Enter when you must wake.
- 2Pick a cycle count.
- 3Try to be in bed before the suggested time.
FAQ
- Everyone is 90 minutes?
- No. It is a common average. Your nights vary.
- Caffeine?
- See caffeine half-life if 3 pm espresso is the real problem.
- Do you keep my numbers?
- No. They stay in this tab until you refresh.
- Is this free?
- Yes. Ads may appear when you copy or run the main action.