Estrogen may give women an endurance edge over men

Women are able to hold muscle contractions about 75 percent longer than men, probably because estrogen improves blood flow to the muscles, according to a study from the University of Colorado. Researchers believe that estrogen helps the body conserve carbohydrates, giving women an advantage in aerobic exercise.

The joy of oysters
Oysters have an amazing amount of zinc; a serving of six will give you 500 percent of the dietary requirement. Zinc builds the immune system and maintains muscle tissue. It is also essential for sperm production and sexual function in men. Perhaps this is why oysters also have a reputation as an aphrodisiac.

Like you didn't already know
Researchers at Utrecht University in Netherlands found that gastrointestinal problems such as urgency, flatulence, and diarrhea develop among 71 percent of long-distance runners.

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