Latent Superpowers…?

I think I may be developing superpowers. As far as I know, I haven't been exposed to radiation, mutagens, spider-bites, or extraterrestrials. But how can I be sure? I wouldn't want to accidentally crush anything with my super-strength. A few weeks ago while demolishing the old porch, I bent my hammer - the hammer I have owned and used for probably 5-6 years now with no problems - nearly in half. A week or two before that, I bent a spaded shovel in half while trying to dig up a horrible-looking (and foul-smelling) bush next to our porch. I wonder if I can punch through concrete walls? Hang on a sec...

Ouch.