Rowing machines have been a fitness club staple for many years. It's a great exercise for legs, upper body, and core strength. In addition, when used properly, rowing machines offer cardio benefits as well.

Indo-Row takes rowing machines to a new level. It's an intense, instructor-led group class using rowing machines. The objective is not on speed, but on strength and synchronicity with the rest of the class. The group works together, just like a crew rowing a boat on water would work together. The classes are usually 50 minutes long. And the workout is intense -- a 145-pound woman can burn 400-600 calories.

Check to see if your gym is going to start this class anytime soon. If not, call around and see if any other gyms in the area offer the class and will let you in on a day pass. Would you rather take your rowing outdoors? Chris fills us in on the Row to Beijing Challenge.