As any martial artist knows that flexibility is the key element to creating more powerful kicks, minimizing injuries, and even improving your posture. Also, by gaining flexibility you will also gain in your strength and power. So, whether you use a leg stretcher or work on your flexibility naturally it is time very well spent. One great way to gain flexibility is through the use of a stretching partner. However, if you don’t have access to a partner another fantastic way is to us a stretching machine.