How to get 90 minutes deep sleep every night
What is deep sleep? Deep sleep, also known as slow-wave sleep or Stage 3 NREM (non-rapid eye movement) sleep, is a crucial stage of the sleep cycle. Our body and brain undergo essential rejuvenation and repair processes during this stage. During deep sleep, our brain waves slow down significantly, and our muscles relax. This is… Læs mere "How to get 90 minutes deep sleep every night