It's not all she does but My Name is Earl actress Jaime Pressly says her best workout involves chasing around her 13-month-old son.

Dezi James is a really intelligent kid, which is amazing and great, says Pressly. But at the same time, the little guy makes her a bit crazy, causing her to run around like a chicken with her head cut off. He's all over the place, she says.

Clearly, chasing little ones can keep moms and dads in shape. But Pressly is committed to other forms of exercise too -- she's typically in the gym three or four days a week.