Cooling down, also named calming down, is an easy exercise that will allow the body to gradually transition to a resting or near-resting state. Depending on the intensity of the exercise, cooling down can involve a slow jog or walk, or with lower intensities, stretching can be used. Cooling down allows the heart rate to return to its resting rate. Studies are currently inconclusive as to whether actually reduces delayed-onset muscle soreness and muscle soreness is not caused by lactate production during intense exercise. Anecdotally cooling down may reduce dizziness for professional or serious athletes and vocal performers after strenuous workouts. Studies have shown a weak correlation between cooling down and less muscle delayed-onset muscle soreness, however the majority of recent studies discount this relationship. One study has shown that some certain athletes who perform an extensive cool-down are less likely to become injured.