back cover front cover INTRODUCTION The CanDo® Leg Stretcher is an excellent assistive device to help stretch legs, feet, and abides. Inflexible leg muscles and tendons can pose a danger to athletes and fitness enthusiasts. When the leg muscles are deprived of stretching, they tighten and constrict the movement at the ankle. This can negatively impact the stride as well as cause ruptures to the Achilles tendon. For this reason is it important to maintain flexibility in your legs.