When you first fall asleep you enter NREM sleep, which has three distinct stages, often referred to as N1, N2 and N3 or stage 1, stage 2 and stage 3. You begin sleep at N1 and then pass into N2 followed by N3. As you progress through these stages, your sleep gets deeper and deeper.

The sleep cycle consists of different stages, including light sleep, deep sleep, and REM sleep. Each stage has its unique characteristics and plays a vital role in restoring and rejuvenating the body and mind. During light sleep, the body relaxes and prepares for deeper stages of sleep.

There are three other stages of non-REM sleep: stage one, when you feel drowsy and start falling asleep; stage two, often referred to as light sleep; and stage three, called deep sleep. Each stage is important, but they aren’t set in stone. The sleep stages and cycle change throughout the night.

Non-REM sleep has three stages, defined by measurements of brain activity taken in sleep studies. Stage 1. This stage is the transition between wakefulness and sleep. Stage 2. When you reach stage 2, you are asleep. Stage 3.

Sleep consists of four main stages that repeat in cycles throughout the night: Non-REM Stage 1 and 2. Light sleep, helping the body relax and prepare for deeper sleep. Non-REM Stage 3. Deep sleep, crucial for physical restoration and growth. REM (Rapid Eye Movement) Sleep.