Spotted a lizard doing push ups? Here's why they do it and why they don't get tired of doing it.

Have you ever noticed how some lizards seem to perform push-ups when they are standing up against a wall, rock, or a tree branch? Many people wonder whether they are exercising, but actually, this is ...

Add Yahoo as a preferred source to see more of our stories on Google. In Arizona, spotting a lizard is as common as finding sunscreen in your glovebox. These scaly little sunbathers love soaking up ...