When I was young, maybe 10 or so, I remember jumping from the attic box-room to the floor below. In my mind, I was a superman, and this could be achieved. The excruciating pain that followed reminded me that Superman also experienced pain when trying to achieve extraordinary feats!
It was only yesterday that I lifted you off your feets and swung you around, your hair forming a circle in my little room. I love the shreik of surprise that you let out, and the tantrums you throw when I don't put you down. I would love to do this with you all my life.
That hint of a sprain in my lower back tells me that the Superman is still alive in me, it's just that you, probably, you should hit the gym more often.