Sprint workouts are an effective way to boost your running performance. Try a ratio of 1:3 or 1:5, sprinting for 30 seconds, then resting for at least 90 seconds.
Sprint workouts are an effective way to boost your running performance. Try a ratio of 1:3 or 1:5, sprinting for 30 seconds, then resting for at least 90 seconds.
Sprint workouts are an effective way to boost your running performance. Try a ratio of 1:3 or 1:5, sprinting for 30 seconds, then resting for at least 90 seconds.
