Sleep is not a single, uniform state — it is a complex journey through distinct stages that repeat in cycles t! Swipe to see →
In this article, we will explore in detail the 5 stages of sleep, what happens in your body and brain during each one, and why sleeping w...
Before detailing each stage, it is important to understand the overall structure. A night of sleep consists of 4 to 6 cycles, each lastin...
Stage 1 is the gateway to sleep. It is that moment when you are between awake and asleep — your eyes close, but any noise can wake you.
Stage 2 is the longest sleep stage, representing about 50% of total time spent sleeping. It is more stable than stage 1 but still relativ...
Stage 3 marks the beginning of deep sleep, also called slow-wave sleep. It is the most physically restorative stage and the hardest to in...
Stage 4 is the continuation and intensification of stage 3. Some modern researchers combine stages 3 and 4 into a single stage called "N3...
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