| Like pharmacological drugs, physical exercise may be chemically addictive. One theory is that this addiction is due to natural endorphins and dopamine generated and regulated by the exercise.[2] Whether strictly due to this chemical by-product or not, some people can be said to become addicted to or fixated on psychological/physical effects of physical exercise and fitness.[3] This may lead to overexercise, resulting in the "overtraining" syndrome.[4] |
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