5a. The sleep cycle is said to repeat every 90 minutes, especially for young adults. The EGG was able to measure the sleep cycle and show what happens when a person sleeps. The first stage, NREM-1, is when we see images that looks like and feels like hallucinations (briefly happens). The second stage, NREM-2, people experience sleep spindles and it is harder to be waken up at this point. Stage 3, NREM-3, is the deep sleep in the cycle. The EGG shows a slower and long waves. In this stage, people can experience sometimes bedwetting, sleepwalking, and night terrors. Stage 4, REM Sleep, when there is a fast eye movement because of the dreams and brain activity. Happens when a person is dreaming. 5b. the reason why we dream it is to satisfy our
