People who exercise spend less time in the toxic state known as oxidative stress. This noxious condition begins with a free radical, a molecule that is missing an electron. A free radical is rickety, unstable, incomplete. It craves the missing electron, so it swipes one from another molecule—which is now unstable itself and needs to steal a replacement electron of its own. Like a dark mood that is passed from one person to another, each person feeling a little better the bad feelings are dumped onto someone else, oxidative stress is a state that can shear through a cell’s molecular population.
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