There are three stages of sleep: REM, non-REM, and waking sleep. REM sleep is a deep, dream-like state during which the brain and body slow down and are less responsive to the world around us. Scientists believe that the brain stores long-term memories during this stage of sleep. The following three stages are the most important for our health and well-being. In this article, we’ll look at the three stages of sleep, and discuss how they affect your body and mind.
A deep sleep, or slow wave sleep, is essential for many functions of the brain. This stage is associated with feeling refreshed the next day, as your heart rate, blood pressure, and breathing slow down. Although the exact reason for sleep is unknown, it is thought to promote good health and support the immune system. Research has linked poor sleep to an increased risk of heart disease, obesity, and diabetes. Getting enough sleep is a crucial part of our overall health.
Stage 2 NREM sleep is a deeper phase of sleep. Heart rate and breathing rate are lower, muscles are relaxed, and the body temperature is lowered. The most important reason for this stage is that sleepers are the least likely to wake up during this phase. Those who wake up during this stage will likely feel foggy for an hour or more after awakening. This stage is the deepest sleep stage, but it will last longer than the first two stages.
Although many people associate REM sleep with waking up, the truth is that there is no one way to define the stages of sleep. We all need sleep, and we need it to function properly the next day. Insomnia is a common disorder, but it can be treated. If it’s not a medical condition, a physician may prescribe a medication or schedule a sleep study. The International Classification of Sleep Disorders defines six categories and dozens of subtypes.
While the average adult needs between seven and nine hours of sleep per night, the exact number varies. Infants and teenagers need 16 hours or more of sleep a day. An adult needs seven or eight hours of sleep per night, although some individuals may need less or even none at all. Pregnant women often require more sleep than usual. If you’re not getting the recommended number of hours of sleep every night, see a sleep specialist to find out what’s causing your insomnia and improve your quality of sleep.
Lack of sleep impairs the body’s immune system and increases the risk of respiratory diseases. A lack of sleep also affects the production of hormones that control hunger and fullness. Insulin releases is triggered by sleep, and changes in sleep patterns may affect your weight and your risk of developing type 2 diabetes. Sleep also plays an important role in the metabolism of the body, and a single night of poor sleep can lead to a prediabetic state.