Cardio

Knowing your maximum heart rate is essential for effective aerobic workouts. But if you're using 220 minus your age, you may be missing the mark entirely.

Plyometrics are a demanding form of exercise, but they can add speed and power to your athletic endeavors.

Feel like your fitness regimen is stalling? Grab a heart-rate monitor for instant feedback and lasting motivation.

Eager to be leaner? Don't work harder (or wait longer) than you have to! Learn the art of heart-rate training for optimal fat loss.

Had enough of mysterious fitness plateaus, mindless exertion, confusing estimates and lackluster results? Make sense of it all with the tell-all help of a heart-rate monitor.