I have just learned to walk up stairs using only my hands. But that is just the beginning. I am now on a small quest to learn how to do a one armed hand stand push-up. Wish me luck, because this is the most difficult challenge based around calisthenics that i have decided to learn. I thought one armed two finger push-ups where hard at first. Then i met walking up stairs on my hands. Both those, however, became easy when introduced to the one armed hand stand push-up.