Stages of Sleep

5 Stages of Sleep


As you can see, sleep plays a vital role in good health and well-being throughout our lives. Getting enough quality sleep at the right time can help protect our mental health, physical health, quality of life, and safety. The way we feel while we’re awake depends in part on what happens while we’re sleeping. During sleep, our body is working to support healthy brain function and maintain our physical health.

Sleep supports healthy growth and development. Deep sleep triggers the body to release the hormone that promotes normal growth in children and teens. This hormone also boosts muscle mass and helps repair cells and tissues in children, teens, and adults. Sleep also plays a role in puberty and fertility.

The damage from sleep deficiency can occur in an instant, such as a car crash, or it can harm us over time, such as when ongoing sleep deficiency causes some chronic health problems. It also can affect how well we think, react, work, learn, and get along with others.

Studies also show that sleep deficiency alters activity in some parts of the brain. If we’re sleep deficient, we may have trouble making decisions, solving problems, controlling our emotions and behavior, and coping with change. Sleep deficiency also has been linked to depression, suicide, and risk-taking behavior.

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