If you are feeling your end limit because it’s feeling like you are at your maximum stretch, this is your elastic limit, i.e., the most you can stretch your myofascial tissues without injury. However, if you are at your end range of movement with no feeling of stretch but just can’t seem to move deeper, that is most likely your compressive limit or where your bones actually run into each other. Once you’ve reached that point, you’ve reached the potential of that joint in that posture and that’s as far as your body is going to go. You can coax your muscles and their associated connective tissues into getting longer, but you can’t argue with your bones.
For example, some people’s ankle bones are designed in a way that will never allow their heels to touch the floor in Adho Mukha Svansana (Down Dog). It’s not a human design flaw, it’s the truth of that particular yogi’s bones. Not everyone is supposed to get their heels down. One of the many purposes of asana is to condition and stretch soft tissues so yogis can actually find their compressive limit. Asanas should look as unique and varied as the bodies performing them. Bone movement limits are one of the differentiating factors. Finding your compressive limit should be a celebration because it means you’ve actually discovered your body’s potential for those joints. Once you’ve experienced the truth of your bones, the only thing left to do is accept and enjoy it!