Why do we need sleep?
Sleep is essential for many brain and body processes that keep you healthy. Without enough high-quality sleep, you are more at risk for a variety of illnesses.
Benefits of sleep
Getting enough sleep helps you:
- Have more energy
- Rest important organs and tissues, such as your heart
- Build muscle mass
- Heal damaged cells and tissues
- Maintain a healthy hormone balance
- Boost your immune system and protect against illness
- Learn new things
- Reduce stress levels
- Think more clearly
- Form new memories
Health risks of poor sleep
When you sleep too little, or your sleep isn’t restorative, you have a higher chance of developing health conditions like hypertension (high blood pressure), heart disease, obesity, diabetes, anxiety, and depression.
Medically reviewed by
Dr. Colleen Ehrnstrom is a licensed clinical psychologist with a specialty practice in Acceptance and Commitment Therapy (ACT). Areas of expertise include insomnia and other sleep disorders, anxiety, and depression.
Dr Ehrnstrom is the co-author of the book End the Insomnia Struggle: A Step by Step Guide to Help you Get to Sleep and Stay Asleep which offers a comprehensive, personalized sleep program that integrates the physiology of sleep, cognitive behavioral therapy for insomnia (CBT-I) and acceptance and commitment therapy (ACT).