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Wednesday, September 17, 2008

Sleep

I recently came across some intriguing into about sleep that probably no one but the most advanced researchers knows. First of all, when you sleep you pass through two stages: the first four hours consists of deep sleep, and this is the most crucial sleep period time because during this phase the body produces growth hormone and repairs muscles and cells. The last three to four hours is lighter sleep and the body, during this last phase, produces sex hormones, including testosterone. To get your fix of good sleep, you might want to try melatonin, a natural hormone (and, incidentally, a powerful antioxidant) that's very inexpensive. Remember, the less sleep you get, the less of these vital hormones you'll produce — so aim to get 7 to 10 hours of sleep each night. If you miss a night, try to make up the sleep loss asap.

References: 1. Decreased serum levels of oestradiol, testosterone and prolactin during prolonged physical strain and sleep deprivation, and the influence of a high calory diet. European Journal of Applied Physiology. Volume 49, Number 3, September, 1982.
2. Relationship Between Rapid Eye Movement Sleep and Testosterone Secretion in Normal Men.
Journal of Andrology. Volume 20, Issue 6 (November 1999).

2 comments:

Leo (Healthy Tips For A Healthy Lifestyle) said...

Good tip there at the end. I should really do it as I only slept 4 hrs last night!

Rachel said...

I have noticed that if I have a better nights sleep I tend to lose weight!