I have no idea where Miles gets his athleticism or his muscles. Today he learned how to do this all by himself. Conveniently, we just bought a baby gate to prevent him from toppling down the stairs. Guess I didn't think that he would soon be able to climb them.
Below are some photos of me when I learned how to climb the stairs. Looks like the apple doesn't fall far from the tree. Although in this case, it seems to have fallen about 4 months sooner.

