Why do we need sleep and what happens when we don't get enough? In this introduction to a course about sleeping, learn how research supports its importance.

Your body has an internal clock, and it's called circadian rhythms. In this health and science lesson, Hari discusses how this affects day to day functions.

Stress may be affecting your sleep patterns and general health. In this lesson, discover strategies to help you overcome stress short-term and long-term.

Believe it or not, substances like caffeine and alcohol affect sleep patterns. Learn what you can do if you still want your cup of coffee or post-work drink.

Do you use electronic devices right before going to sleep? In this health and science lesson, learn why you should avoid using phones or laptops after 9pm.

How do you set up your bedroom for successful sleep? This lesson shares tips and tricks for getting a lengthy, quality night's sleep in your bed.

Chances are, you probably have a magnesium deficiency. Never fear! This lesson reveals how to up your magnesium intake for a better night's sleep.

Do you have trouble sleeping? Simple meditation can help you. Learn how to get started with meditation with a tiny bit of guidance from the Thought Gym.

Did you know that artificial light prevents your best possible sleep? In this health and science lesson, learn how to use natural light to your advantage.

Babies have nighttime rituals, so why shouldn't adults? In this health lesson about sleep, discover a few before-bed things you can do to get into sleep mode.