In this video you will learn the most optimal alignment for Down Dog, ways you can modify the pose as well as how to avoid common misalignment in the pose. PLEASE don't worry about if your heels touch the mat or not. Whether they do or don't, you still send energy down the legs and into the heels as if the heels were weighted. If you are forcing your heels to touch the floor it can potentially cause you to overstretch your legs and you will also be pulling yourself out of optimal alignment.