Sleep used to be viewed as a passive, dormant state – seemingly insignificant. But research begun in the 1950’s changed that. We now better understand that sleep affects our physical and mental health. Sleep is part of the circadian rhythm, a 24-hour cycle driven by light and dark in our environment. The circadian rhythm controls at least 15% of our DNA, including our body’s repair mechanisms. Most hormone production is regulated by sleep. The recently discovered glymphatic system works to eliminate toxins from the brain while we sleep. And sleep is when we solidify learning and establish memories.
When we don’t get enough sleep we are tired during the day, have concentration and memory problems, decreased attention span, and bad moods. Over time, health problems can develop. The immune system may weaken; obesity, diabetes and cardiovascular issues can develop due to sleep deprivation.