what happens when you get a good night sleep
One way to understand why we sleep is to look at what happens when we don't get enough: 1  As you know if you have ever pulled an all-nighter, missing one night of sleep is not fatal.What we all know is that, with a good night's sleep, everything looks and feels better in the morning. Both the brain and the body are refreshed and ready for a new day. Dreams are another important part of sleep. We'll take a closer look at how dreams work in the next section.