Sprinting is one of the most powerful and natural movement patterns which synergistically strengthens and conditions the muscles in the foot, lower leg, upper leg and hips whilst also providing a great cardiovascular workout. Whether it is 50m or 400m a couple of high intensity sprints will do wonderful things for your body composition and fitness. If it has been a long time since you last sprinted you will want to make sure you have a basic level of strength, mobility and fitness before easing your way back into this type of activity slowly and carefully.