supply to muscles increases, tissue growth and repair continues, energy is restored, and human growth hormone continues to be secreted. Stage five is also called “Rapid Eye Movement” (REM) sleep because the eyes dart back and forth. Dreaming is done in stage five. Dreaming has been found to be important for healthy brain functioning, providing energy to brain and body, and creation of long-term memories. The arms
Stages of Sleep
Awake REM
Non- REM
1 2 3 4
0 Source:
www.health.harvard.edu 1 2 3 4 Hours of sleep 5 6 7
& legs have periods of paralysis which is thought to protect us from acting out our dreams (National Sleep Foundation, 2016).
Sleep Can Improve Fitness and
Sports Performance Because of the release of human growth hormone in stages 3 and 4, sleep is re- ferred to as “The Athletes Steroid.” Human
growth hormone helps maintain and repair muscle and cells and is a key component to improving fitness and sports performance (McArdle, Katch, and Katch, 2001). Gordon Sleivert, Ph.D., formally of the Canadian Sport Centre Pacific suggests “A universal recovery strategy that is essential to both physiological adaptation and the consolida- tion of skill development is sleep.”
“Sleep duration may be an important consideration for an athlete’s daily training regimen.”
~ Cheri Mah, Ph.D., of the Stanford University Sleep Disorders Clinic and Research Laboratory indicates
Cheri Mah, Ph.D. (Stanford Sleep Clinic)
indicates “sleep is an important factor in peak athletic performance” and “athletes may be able to optimize training and com- petition outcomes by identifying strategies to maximize the benefits of sleep.” Research on the effect of getting more sleep is done by
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