That tension becomes especially clear with heart rate zone training, a popular five-tier system that endurance athletes use ...

No time to get to the gym? Prefer to work out at home? You can build impressive shoulders and muscular arms with this ...

Over the next 4 weeks, you’ll follow a specific workout plan each day: strength training, optional cardio/steps, active recovery, or rest. Each strength workout includes a warm-up and a cooldown ...

Cycling and running both improve fitness. Learn how they compare to decide which fits your goals and lifestyle best.