The 4 Stages of Sleep: What Happens During Each Cycle
Dec 14, 2025 · As we sleep, our brain moves through four stages and two phases: non-rapid eye movement (NREM) and rapid eye movement (REM). The brain has four stages within the …
Stages of Sleep: What Happens in a Normal Sleep Cycle?
Jul 25, 2025 · Healthy sleep consists of four stages. We break down the traits of both REM and NREM stages, how they differ, and how to get better sleep.
The 4 stages of sleep: NREM, REM, and your sleep cycle
Mar 6, 2024 · Learn about the 4 stages of sleep, how long each cycle is, and how much deep sleep you really need. Plus, what occurs during each stage, including REM and NREM.
Stages of Sleep: What Happens During Each and Sleep Hygiene …
Jan 2, 2025 · Your body cycles through the 4 stages of sleep — 3 stages of non-REM sleep and 1 stage of REM sleep — about 4 to 6 times each night. These sleep cycles affect your breathing, …
What Are The 4 Stages Of Sleep & What Does Each Stage Do?
Dec 19, 2025 · Each night, you take a rollercoaster ride through the different stages of sleep. Though you’re unaware of what goes on while you’re snoozing, your brain and body are in an …
What Are the Sleep Stages? - National Sleep Foundation
Nov 12, 2020 · However, as you’re peacefully asleep in your bed, your body is cycling through four stages that serve specific purposes. Learn about the different sleep stages and how a …
The stages of sleep - UT Physicians
Mar 13, 2025 · It’s essential to understand the four stages of sleep and how to get more restful z’s. Stage 1: Transitional sleep. The sleep cycle begins with the shortest stage of sleep. The …
The Sleep Stages: Your Brain’s REM and NREM Sleep Cycle
Apr 9, 2025 · Sleep is broken down into two phases: nonrapid eye movement (NREM) sleep and rapid eye movement (REM) sleep. These phases are then divided into four stages — N1, N2, …
The 4 Stages of Sleep - REM and Non-REM Explained
Sleep progresses through four distinct stages – three stages of NREM sleep followed by REM sleep – that repeat cyclically throughout the night. Each stage features unique brainwave …
Four Stages of Sleep - Amerisleep
Nov 12, 2025 · During sleep, we experience multiple sleep cycles. Each cycle is made up of four sleep stages—three non-REM stages and one REM stage. As you cycle through each one of …