The main benefits of stretching are Improving Athletic Performance and Decreasing the Risk of activity-based Injuries in Running, Swimming, Sports and most Aerobic Activity. Stretching before Strength Training is not recommended, (as stretching stimulates Golgi Body organelles which relax tendons making you a bit weaker in some lifts); Stretching is Highly Beneficial after Strength Training Workouts due to Increased Blood Flow to Muscles: carrying Nutrients and Oxygen into the Muscle, Increasing Carbohydrate Synthesis and aiding Protein Transport. For Runners and Aerobic Exercising Leg Stretch Machines increase Flexibility and may improve Performance in these Physical Activities and Decrease Risk of Injuries by helping Joints move through a Full Range of Motion. Stretch Machines Ship for FREE!