Spider-Monkey Boy

What is wrong with my Son? He LOVES to climb the door-ways in our house about 20 times a day. I guess it's good exersize right? I'm amazed he can climb to the top so quickly. He's like a little Jackie Chan. I think it's a boy thing, because my Daughter never did this. Boys have a lot more energy I'm finding out. Here he is, climbing the doorway in our dining room. We've now nick-named him Spider-Monkey Boy because of this. I keep telling him not to do this. He's gonna fall and break something, but it doesn't stop him. If I bought him a rockwall I think he would still continue to climb in the house. I'm hoping this is something he'll grow out of. I wish I felt so good to have the energy for half of what he does. :)

Here's him in action!