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 ...

Lizards' push-up movements are actually a form of communication. Both male and female lizards can perform push-up displays.