Sleep plays a massive role in general health and well-being throughout your life. Getting enough quality sleep at the right times can help promote mental health, physical health and overall quality of life.
How you feel and perform in day to day activities and during exercise depends in part on what happens while you're sleeping. During sleep, your body is working to support healthy brain function and maintain your physical health. In children and teens, sleep also helps support growth and development.
The damage from sleep deficiency can build up over time. For example, ongoing sleep deficiency can raise your risk for some chronic health problems. It also can affect how well you think, react, work, learn, and interact on a social level.
IMPORTANCE OF SLEEP TO PHYSICAL HEALTH
Sleep plays an important role in your physical health. For example, sleep is involved in CNS relaxation, muscle damage repair and growth as well as healing and repair of the heart and blood vessels.
Sleep helps maintain a healthy balance of the hormones that make you feel hungry (ghrelin) or full (leptin). When you don't get enough sleep, your level of ghrelin goes up and your level of leptin goes down. This makes you feel hungrier than when you're well-rested.
Sleep also has an impact on how your body responds to insulin, the hormone that controls your blood glucose (sugar) level. Sleep deficiency can result in a higher than normal blood sugar level, which may increase your risk for diabetes.
Your immune system also depends on quality sleep to remain functioning optimally. This system defends your body against infections, diseases etc. Ongoing sleep deficiency can alter how this responds. For example, if you're sleep deficient, you may have trouble fighting common infections."