Wake up feeling refreshed by aligning your alarm to the end of a complete 90-minute sleep cycle.
We'll calculate the best times to fall asleep (+14 min to fall asleep)
Each sleep cycle lasts ~90 minutes, progressing through light sleep, deep sleep, and REM.
Adults need 5–6 complete cycles (7.5–9 hrs). Waking mid-cycle causes grogginess.
It takes the average person 14 minutes to fall asleep. Our tool accounts for this.