![]() A sleeping baby spends almost 50% of their time in REM while an adult spends almost 50% in stage 2 and only 20% in REM. The length of time spent in each stage of sleep depends on age. The heart rate increases and blood pressure rises.Īfter REM sleep, stage one begins again and the cycle occurs four to five times per night, depending on the hours a person stays asleep. While the eyes are still closed, they are moving quickly from side to side. REM – intense dream and brain wave activity occurs during this stage. Stage 4 – still in deep sleep, the brain is producing delta waves. Stage 3 – now in deep sleep, the brain waves are extremely slow and interspersed with smaller, faster waves (delta waves). There is an occasional burst of rapid brain waves but the waves have slowed and eye movement has stopped as the body prepares for deep sleep. Stage 2 – the body temperature drops and heart rate slows. You are easily awakened during this stage. Some people experience muscle contractions then a feeling of falling. Stage 1 – light sleep where the eyes move slowly and muscle activity slows down. Each stage of sleep lasts for 5 and 15 minutes and a complete sleep cycle takes 90 to 110 minutes. So, how do we sleep better, deeper and faster? First we need to understand how sleep works: The Stages of Sleep Poor sleep quality has been linked to psychological problems including anxiety, depression and suicidal thoughts. Any less and you can be doing yourself physical and mental harm. The recommended amount of sleep for adults is 7 to 9 hours every night. Our brain needs sleep to process the day’s events into long-term memory. Sleep is required for the human body to rejuvenate, repair tissue, grow muscle, restore the immune system and balance hormones. ![]() Without enough sleep, our health and wellbeing suffers. ![]()
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