Stage one is the lightest stage of the cycle, in this stage, people drift in and out of sleep and can be easily awakened. The second stage eye movement begins to stop and brain waves become slower with a small burst of brain waves every once and awhile. Stage three very slow delta waves are intersected with smaller shorter waves. With stage four the brain only produces delta waves. Stage three and four are deep sleep, in deep sleep, there is no eye movement or muscle activity. Lastly is REM sleeping which stands for rapid eye movement, in this stage people experience rapid slow shallow breaths, eye jerking at a fast paced, and temporary paralysis. Also in this stage blood pressure rises, heart rate goes up and the body loses the ability to regulate temperature. During this time is when most dreams happen, if people awake during REM sleep they will most likely be able to remember these dreams. Adults spend half of sleep time in stage 2, about 20% in REM and the other 30% is divided between the other three stages (Stages of
Stage one is the lightest stage of the cycle, in this stage, people drift in and out of sleep and can be easily awakened. The second stage eye movement begins to stop and brain waves become slower with a small burst of brain waves every once and awhile. Stage three very slow delta waves are intersected with smaller shorter waves. With stage four the brain only produces delta waves. Stage three and four are deep sleep, in deep sleep, there is no eye movement or muscle activity. Lastly is REM sleeping which stands for rapid eye movement, in this stage people experience rapid slow shallow breaths, eye jerking at a fast paced, and temporary paralysis. Also in this stage blood pressure rises, heart rate goes up and the body loses the ability to regulate temperature. During this time is when most dreams happen, if people awake during REM sleep they will most likely be able to remember these dreams. Adults spend half of sleep time in stage 2, about 20% in REM and the other 30% is divided between the other three stages (Stages of