The 90 sleep rule is a sleep hygiene practice that suggests you should sleep for a total of 90 minutes for every 3 hours that you are awake. This means that if you are awake for 12 hours, you should aim for a total of 8 hours of sleep. This rule is based on the idea that our sleep patterns follow a 90-minute cycle, with each cycle consisting of four stages: light sleep, deep sleep, REM sleep, and a brief period of wakefulness. By aiming for a total of 90 minutes for each 3-hour period, you will be able to get enough of each stage of sleep that your body needs.
The 90 sleep rule has been proven to be beneficial for both physical and mental health. Studies show that following the rule can help improve your mood, reduce stress, increase productivity and alertness, and improve memory. It can also help to prevent insomnia and improve your overall sleep quality.
If you are having trouble sleeping, following the 90 sleep rule may help. Try to go to bed at the same time every night and stick to a consistent wake-up time in the morning. Avoid caffeine and other stimulants late in the day, and avoid screens before bed. Try to create a relaxing bedtime routine that can help you to wind down and relax. You can also try some deep breathing exercises or meditation before bed. If you find that you are still having difficulty sleeping, it is advisable to speak to your doctor for advice.