Why Do We Need Sleep?


Oh, hey there! [Jessi yawns] Excuse me! I’m so sorry. I’m kind of tired today, because I didn’t
get enough sleep last night! [Squeaks squeaks] Aw, thanks, Squeaks! But I think I’ll be alright. You probably already know that sleep is really
important, and that we need to get plenty of it. Doctors think that most kids need to get about
10-12 hours of sleep every day! But sometimes it’s hard to go to bed when
you’re supposed to, especially if you don’t feel tired. That’s why it helps to know what’s going
on while you’re snoozing away at night, and why sleep is so important. Think about all of the things you do during
the day. You probably spend a lot of your day playing,
or maybe going places like to school or to the store. All those activities, and anything else you
do, take energy. Your body still uses energy when you sleep,
but it uses less of it. Since your body uses less energy when you
sleep, it has a chance to save some some of that energy for later. So you feel good when you wake up the next
morning, and you’re ready to tackle another day! Sleep also gives your body a chance to focus
energy on things that help to keep you healthy. For example, your body uses energy to heal
and to grow while you sleep. Sleep also gives your body a chance to use
energy to fight off the germs that can make you sick. So, sleep is important for your whole body. But there’s one special part of your body
that /really/ needs sleep … your brain! Sleep not only gives your body a rest, it
gives your brain a rest, too! Your brain is super busy during the day! It works really hard to make sense of all
of the things you see, smell, and hear; it makes sure that the parts of your body are
working together; it helps you make decisions; and it helps you learn new things. And that’s just some of its jobs! Your brain doesn’t stop working when you
sleep, but it does have a chance to slow down for a bit, and to kind of figure things out. While you sleep, your brain organizes the
things you learned during the day to help you remember them later. Your brain also sorts out your feelings while
you sleep. Scientists have also found that your brain
needs sleep to help you concentrate, so you can be better at solving problems at home
and at school. Wow, there’s a /lot/ going on while you
sleep, even if you don’t remember it when you wake up! There’s so much going on, in fact, that
your body usually makes you feel pretty terrible when you don’t get enough sleep. Too little sleep can make you feel tired,
and can make it harder for you to concentrate or solve problems. And, since your brain helps sort out your
feelings while you’re sleeping, you can also feel cranky or crabby when you don’t
get enough sleep! So, what can you do to make sure that you
get enough sleep? First, doctors and other sleep experts say
you should have a sleep routine. That means you should try do the same things
every night before we go to bed. A sleep routine helps your body realize that
it’s time to go to sleep. A good routine might include reading a story,
having a bath, or maybe listening to some soft music. It should also mean going to bed at about
the same time every night, and getting up at about the same time every morning. That’s one of the reasons it’s important
to have a bedtime! One thing that /shouldn’t/ be part of your
sleep routine is watching TV or using a tablet or phone. That’s because the special light from their
screens can send a signal to your body that it’s daytime, even when it’s really time
for bed! So now you know why it’s so important to
get a good night’s sleep. I think I’m going to take a nap! Thanks for joining us on SciShow Kids! If you want to keep learning and having fun
with me and Squeaks, hit the red subscribe button. We’ll see you next time here at the fort!

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69 thoughts on “Why Do We Need Sleep?

  1. if you have to use your computer/laptop/tablet/phone at night, use the "night time" mode or an app like flux/twilight to reduce the amount of blue/special light.

  2. Jessie once I got so tired that I took a nap then I wake up and that night I couldn't sleep so why does that happen

  3. Jessi you are right we should learn habit of sleep early to keep the sleep problem away from life, Thanks for such nice video.

  4. sometime our brain works during sleeping because
    when we give more time in a math problem or some confusing questions then during the
    sleeping we solved our problem

  5. Can you teach my daughter how to concoct a potion that when ingested would make Trump not President? Thanks.

  6. i typically sleep less than 6 hours with multiple days of the week me sleeping probably 3-4 hours. Its pretty bad because I just don't want to sleep. I end up regretting it in the morning.

  7. Hello,my name is Kristina,I am 8 years old and my question is why do baby's sleep more than adults and children?

  8. Sleeping doesn't make you grow you only need sleep to restore energy and the other things you stated

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