Survey specialists in physiotherapy found that at the end of normal workout runners usually show an increased movement of hips, knees and ankles.
Scientists have found that the occurrence of fatigue make changes in the mechanics. When a person feel tired and continue to strain himself, that can cause injury because the movements become more difficult to control.
Muscles, tendons and ligaments are loaded to the limit and can easily be injured.
Scientists recommend that training should be discontinued when they feel the first symptoms of fatigue.