Posts tagged "training"
A sleep cycle is broken down into two main stages - NREM (non-rapid eye movement) sleep and REM (rapid eye movement sleep). This cycle is repeated about every 90 minutes with NREM sleep accounting for 75% of a night’s sleep....
Sleep problems are a major issue in the United States. One third of all Americans struggle with insomnia and 35-40% of the country has problems falling asleep as well as feeling sleepy during the day. Research has shown that people...
