In order to choose a wake-up time, you need to learn more about sleep cycles. Every 90 minutes of sleep, a new cycle is formed, which consists of five phases. The first phase is characterized by a more superficial sleep than the next three and each cycle ends with a phase that is characterized by rapid eye movement, that is, the REM-stage, when the brain is active and shows dreams 💭😌.
It is easy to wake up in sleep stage 1 or in the REM-phase. To do this, you need to count the hour and a half intervals. It turns out that waking up after a 7,5-hour sleep is much easier than after an 8-hour sleep. Consider this little trick when you go to bed 🛌.
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