They may experience irritability and depression because when a person constantly smokes, his/her brain begins to rely on the chemicals it gets from the person smoking, which results in the brain "getting lazy" and not producing the chemicals anymore. If the person were to suddenly quit, the brain would lack in the chemicals it had stopped producing, making the person feel constantly annoyed and depressed because of the chemical imbalance.
Golf is the answer to this question
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Social Anxiety, Social Depression, Scared of the outside world, traumatized, and some others.<span />
There muscles will keep moving and keep tiring till when they rest it increases there level
