A Moment of Science
Astronauts and people on bed rest can experience gradual bone loss that increases their risk of fracturing a bone. Here's why.
Sweat is good. When you’re too hot, the sweat evaporating on your skin can cool your body off. Sweat also provides a good waste disposal system for your body, getting rid of toxins and other waste products as it cools you down. However, for top athletes who sweat a lot, too much of a good thing can spell trouble. Learn more on this Moment of Science.
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