Ask the trainer: “Is it necessary to do cardio?”

Reading Time: 2 minutes Do you really need to do cardio? And if so, how much? Here’s what the experts recommend.

FitnessU: 6 burpee variations to boost your heart rate

Reading Time: < 1 minute Whether you’re brand new to burpees or a seasoned squat-thruster, try one of these six burpee variations to keep your workouts interesting.