Waist Watchers: Cardio

WILMINGTON -- Cardio: It's a word many people dread, but it's nearly impossible to lose weight without it.

So many people suck it up and hit the treadmill, because they know that bringing their heart rates up can bring their weight down.

But there's a new trend in fitness, as people learn that if you do what you love it's not so much of a burden.

A sport like handball can work your heart, while also helping you get rid of daily stress.

Some researchers warn that those who max out their workout could actually be harming themselves. Too much cardio can stress out our body, causing inflammation and free-radical damage: the building blocks of cancer.

To avoid problems, trainers say it is important to know your body and its limits, and remember that even in exercise, moderation is key.

Reported by Kim Gebbia