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Baltimore Ravens lineman John Urschel was the only NFL player working on a Ph.D. in mathematics-at MIT, no less. This summer he quit, realizing that the risk of traumatic brain injury and permanent brain damage was just too great.NEXT ARTICLE
Anxiety is caused by stress. It is a natural reaction, and is beneficial in helping us deal with tense situations and pressure. It is deterimental when is becomes an excessive, irrational dread of everyday situations. The most common types of anxiety di...