It seems everyone these days is experiencing some level of stress, with most of us having what we'd probably classify as too much stress. But despite the common goal of a stress-free existence, a certain level of periodic stress is actually necessary for the organism to function properly. Anything can be a stress on the body, whether it's work, relationships, toxic exposure, injury or even poor eating habits or lack of sleep. But much of the negative effects of stress have more to do with...