ABERDEEN PROVING GROUND, Md. - APG News Reporter Rachel Ponder stays motivated by trying a variety of challenging post fitness classes, including the high intensity lunchtime kickboxing class led by certified fitness instructor Andrea Brooks.

Kickboxing combines elements of boxing, martial arts, and aerobics resulting in overall physical conditioning and toning.

"This is a high-intensity interval workout. It is great for cardiovascular and strength building," said Brooks. She explained that kickboxing uses plyometrics, a type of exercise training designed to recruit more muscles than walking alone.

"When done properly this exercise yields fast results," Brooks said.

Follow Ponder and fellow APG News reporter Yvonne Johnson's fitness experiments on APG Live www.apg.armylive.dodlive.mil/, Milblog, Twitter and Flickr. Kickboxing is held at the Aberdeen Athletic Center on Tuesdays from 11:30 a.m. to 12:30 p.m.