20 Healing Facts About How Your Body Regenerates While You Sleep

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Everyone says you should get eight hours of sleep a night, but is it really that important?

Spoiler alert: it is. While you’re sleeping, your body is still working hard to keep you healthy. Keep reading to learn about the surprising things that happen while you’re floating off to dreamland.

Research suggests that the immune system increases production of certain proteins that fight disease during sleep. So if you’re starting to get sick, call it an early night and your body will thank you.

During the later stages of the night, brain activity increases.

But while your body is still, this is when your most vivid dreams occur.

Your adrenaline levels drop, and human growth hormone is produced, which helps grow and maintain your muscles and tissue.

While you sleep, your body temperature drops, along with certain hormones like adrenaline. This makes it easier to sleep deeply and gives your body a chance to rebuild. Keep reading to learn the truth about “beauty sleep.”

Your skin rebuilds itself more quickly while you sleep, which can help with tissue repair and cell growth.

As you fall asleep, the relaxation of your throat muscles causes the throat to get narrower with each inhale. For some people, this can lead to snoring or even sleep apnea.

Salivary flow is reduced during sleep, which makes sense since most of us don’t sleep-eat.

Keeping your body still gives your muscles a chance to repair themselves, but studies suggest that you don’t need to necessarily be asleep to trigger muscle rebuilding.

The heart rate decreases by between 10 and 30 beats per minute during sleep, which makes your blood pressure go down and keeps you relaxed. Why shouldn’t you eat right before sleeping? Click next to find out.

This is why they tell you not to eat right before sleeping—the digestive system gets slower while you rest, so your food isn’t immediately converted into energy.

Your sleeping body suppresses ghrelin (a hunger hormone) and stimulates leptin (a hormone that controls your appetite).

An all-nighter might not be the best bet before your big test—sleeping may be related to creating brain pathways for memory and learning.

Sleeping allows not just your body but also your mind to rest, giving you the energy you’ll need to get through the day. You’ll be sharper and better prepared to make tough decisions.

Scientists say that this can help alleviate inflammation, which is linked to diabetes, heart disease, and other conditions. Keep reading to learn more jaw-dropping sleep facts.

According to WebMD, “a study in the Journal of Sexual Medicine found that women who slept better also had more sexual desire.”

Since blood flow to the skin increases at night, any creams or lotions you use will be absorbed more quickly. Plus, if you use an over-the-counter retinol, it will be more effective if it’s not exposed to sunlight.

Sleeping more helps you manage stress, and if you’ve got a stress-induced condition like acne or eczema, shuteye can be super beneficial.

That’s why you (hopefully) don’t have to get up and pee a million times a night.

Sebum (aka oil) excretion is at its lowest while you sleep, so slather on the moisturizer to make up for the water loss. The fact is, sleep is super important. When you’re getting in eight hours a night, you’re helping your body stay in the best possible condition, inside and out. The next time you find yourself staring at your phone at 3 a.m., give yourself a break and get some shuteye.