Health Tips: Things you didn't know about your body

To lose weight, drink cold water. Your body has to expend extra calories to heat up the H2O in your stomach, resulting in a rise in your resting metabolic rate. In fact, in a 2003 German study researchers estimated that drinking two additional icy quarts a day would help you burn about 100 extra calories -- or the equivalent of a pound of fat every five weeks -- with no other changes in exercise or diet.

Assuming you're a morning person, a smart way to lose weight is to work out before breakfast. That's because when you don't give your body carbs, more of the calories you burn will come from fat stores. Just stick to a moderate 500-calorie workout and you shouldn't pass out.

Before beginning a workout, drink half a Diet Coke. The caffeine can lower the perceived difficulty of the exercises. And the easier they seem, the longer and harder you'll be able to train.

You may want to take that laptop off your lap. Portable computers can heat up to 158 degrees inside. After an hour, that can raise the temperature of your testes by 3.6 degrees, nearly twice what it takes to harm fertility.

The next time you feel a cold coming on, slice a raw garlic clove, let it sit for 10 minutes, then eat; allicin in garlic is a formidable virus killer.

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