Step aerobics is a classic cardio workout. It has lasted for decades for a simple reason: it delivers results. The "step" is a 4-inch to 12-inch raised platform. You step up, around, and down from the ...

Add Yahoo as a preferred source to see more of our stories on Google. Summer is the perfect time to squeeze in a casual pool workout. While swimming laps is a go-to cardio activity all year long, it's ...