Think those elastic bands are all stretch and no cardio? Go back and forth, working different muscle groups with your routine, and you'll feel your heart thumping, said Dunphy. "You can create a ...

Q I bought a 30-minute resistance-cord video. I really like it, but the weird thing is that at the beginning of my routine, I start yawning a great deal. At first I thought I was just tired, but it ...