Want to Stay Active and Healthy? Get Gwen Stefani's Rockstar Fitness Advice

Gwen isn't shy about admitting that vanity drives her to stay fit. She says that she feels "disappointed" when she can't fit into the clothes she loves and that she wants to look her best when on stage.

While health is the number one reason we should all exercise, find whatever driving force you can to consistently get you up and active! Here are five reasons you should be exercising.