What Is the Best Sleep State?

Scientists agree that sleep is essential to health, and while stages 1 to 4 and REM sleep are all important, deep sleep is the most essential of all for feeling rested and staying healthy.

What is the most active sleep state?

Stage 4 is rapid eye movement (REM) sleep, also known as active sleep or paradoxical sleep.

What is the best sleep zone?

What are sleep cycles? Humans sleep in cycles. The best known is REM, which stands for rapid eye movement, because your eyes move rapidly during this stage of sleep.