In extreme instances, over-exercising induce serious performance loss. Unaccustomed overexertion of muscles leads to rhabdomyolysis (damage to muscle) most often seen within new army recruits. One more danger is overtraining, within which the intensity or volume of training surpasses 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 infection (URTI). An increased incidence of URTIs is also associated with high volume/intensity training, as well because with excessive exercise (EE), such as within a convention. Marathon training requires the particular runner to build their own intensity week to week which makes them a lot more prone to injury the a lot more they increase their mileage. The study shows that in the last 10–15 years up in order to 90% of marathon athletes have suffered a physical injury off their training. Ending excessive exercise