Why Do We Sleep?

This hypothesis is consistent with the fact that small animals tend to metabolize more and thus tend to produce more free radicals and to sleep more. For example, giraffes and elephants need an electric nap of only 2-3 hours, but some mice sleep 20 hours a day. Sleep may be the time when your brain does a little chores. As you learn and absorb information throughout the day, you will continue to create new ideas, intersections between neurons through which brain signals pass.

"Why do we fall asleep?" This is a common problem, said Neuroscientist Blythe Mander at the University of California, Berkeley, Sleeping Neuroimaging Laboratory. "There are many people who developed the theory about the reason why we sleep, but most of the theory is actually imperfect as sleep affects every organ system in your body, so many theories "The first stage of sleep is characterized by slowing the movement of the eyes and muscles, the dream consists of fragmented visual images, usually removed from the previous day's experience At the second stage, the eye movements were completely stopped and our brain waves began to slow down.In the third stage the slowest brain waves (called triangle waves) began to appear.In the fourth stage, Delta waves dominate without movement of eyes and muscles.

We repeated five sleep stages in about 90 minutes. Please leave a calm alpha wave. In the relax stage, it will be a sleep of transition stage 1. - Stage 2 sleep (most time spent) is about 20 minutes later, along with its characteristic sleeping axis. - Next is the third and fourth row, it lasts about 30 minutes with a big and slow triangle wave. In the process of retreat, we traced our way, but there is one difference: We experienced REM (rapid eye movement) sleeping period. - Most dreams are the fifth phase of internal awakening (also known as abnormal sleep), but during normal nighttime sleep, sleep times in stages 3 and 4 are shortened and REM sleeping time is prolonged