Humans need a certain amount of sleep to function at their best. The amount varies from person to person, but most adults need around 7 or 8 hours of sleep every night.

Why do we need this much sleep? Well, the body needs time to repair itself during sleep. The brain is an organ in the body and it does not stop working during sleep; it continues to process information about the world around us and make decisions about what needs to be done next. This can be difficult when we are not sleeping but it is essential for keeping our bodies functioning properly.

The human body also needs time to rest so that it can recuperate from physical exertion during the day. Sometimes this may mean taking a break from work or school but more often than not it means going home after a long day of running errands, attending classes, or playing with friends and family members at home.