The active recovery is a common practice in all sports, whose effectiveness has been scientifically demonstrated in several studies.
High rates of workout or race, under anaerobic efforts or for long periods at levels near the anaerobic threshold, leading to an inevitable high level of lactate in the blood, as well as micro-cracks in the muscle tissue. These two aspects are the responsibility of the "muscle pain" that experienced after intense workouts and can last for several days. The subjective ability, and also training, designed to overcome, more or less rapid, this phase of grief, which prevents them from having the best athletic performance. The time required to complete reestablishment of the natural values of lactate and the elimination of pain is called muscle recovery, which can be passive or active. If the passive recovery consists of a period of rest, recovery is active in a workout at values well below the anaerobic threshold and that of favouring the lower level of lactate in the blood. Both have their advantages and their adoption is to be assessed against the objectives to be achieved and situations in which it performs the cycle of training or racing.