The Science of Sleep

How Sleep Affects Your Immunity

Up your odds of staying healthy this cold and flu season by sticking to these bedtime rules.

Do Dreams Affect How Well You Sleep?

If you believe what you dream could be impacting the quality of your shut-eye, here’s what you need to know.

Can You Change Your Circadian Rhythm?

Your body’s internal clock controls how sleepy and awake you feel at different parts of the day. Not happy with your internal clock? Don’t worry: It isn’t set in stone.

How Sleep Is Different for Men and Women

There’s a science-backed reason why you and your partner feel drowsy and alert at different times of the day. Learn how gender affects your sleep cycle.

How to Feel Satisfied with Your Sleep

The secret to loving the sleep that you’re getting is surprisingly simple. Learn how to shift your thinking for greater sleep satisfaction.

Why Improving Your Sleep Satisfaction Can Increase Your Energy Level

A good night of sleep can dramatically improve how alert you feel the next morning. Discover the connection between sleep and energy.

Feel Better About Any Length of Sleep

How satisfied you are with your sleep matters

How Noise Can Affect Your Sleep Satisfaction

Nighttime sounds can jolt you awake. Learn how noise affects how satisfied you feel about your sleep.

How Difficulty Falling Asleep Affects Sleep Satisfaction

Known as sleep onset latency, the length of time it takes to drift off to sleep can make a big difference in how rested you feel when you wake up. Try these smart strategies to make falling asleep a more enjoyable experience.

What Is Sleep Satisfaction?

Learn the true meaning of this important subjective evaluation, and how it’s different from sleep quantity and sleep quality. 

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