Sleep Cycle Calculator

Sleep Cycle Calculator Introduction

1. sleep cycle refers to the existence of a biological rhythm in sleep. the normal sleep cycle is divided into two periods, namely the non-rapid eye movement sleep period and the rapid eye movement sleep period.

2. the non-rapid eye movement sleep period and the rapid eye movement sleep period alternate, and the alternation is one cycle at a time, generally 90-100 minutes.

3. the non-rapid eye movement period is 60-70 minutes, and the rapid exercise period is 15-30 minutes.

4. usually, sleep takes 5 cycles, which can ensure sleep time and quality, usually 6-8 hours.