Within extreme instances, over-exercising induce serious performance loss. Unaccustomed overexertion of muscles results in rhabdomyolysis (damage to muscle) most often seen within new army recruits. Another danger is overtraining, within which the intensity or even volume of training exceeds the human body's capacity to recuperate between bouts. One outcome of detrimental overtraining is usually suppressed immune function, with an increased incidence of upper respiratory tract illness (URTI). An increased occurrence of URTIs is also associated with high volume/intensity training, as well since with excessive exercise (EE), such as within a marathon. Marathon training requires the runner to build their particular intensity week to week which makes them more vunerable to injury the more they increase their mileage. The study shows that in the last 10–15 years up in order to 90% of marathon joggers have suffered a physical injury off their training. Stopping excessive exercise suddenl...