When this is over, the cycle starts over; the original star dies and becomes a white dwarf. White Dwarf The core of a white dwarf star surrounds itself with layers of hydrogen, which still burn, continuing to fuse.
REM sleep is important because it is the restorative part of our sleep cycle. Typically, you begin the sleep cycle with a period of non-REM sleep followed by a very short period of REM sleep. The period of non-REM sleep is made up of stages 1 to 4. Each stage can last from 5 to 15 minutes.
1. Understand the stages of sleep. There are four stages of sleep, with the fourth and final stage being REM sleep. In order to get more REM sleep, you need to gradually allow your mind and body to go through the first three stages of sleep.Maintaining a regular sleep schedule and healthy sleep habits will help you do this. 1  Stage N1: This is when you are transitioning into sleep and lasts about five minutes.. Understand the stages of sleep. There are four stages of sleep, with the fourth and final stage being REM sleep. In order to get more REM sleep, you need to gradually allow your mind and body to go through the first three stages of sleep.