Here's what this means for your next workout.

As you get stronger, you become able to lift heavier and heavier weights. That's the idea at the heart of an often-misunderstood fitness concept: progressive overload. Unfortuantely, there are a lot ...

Dumbbell Burn—programmed by Alexandra Mack, CPT—is a four-week, full-body plan designed to build strength, sculpt muscle, and improve endurance, all while keeping your workouts fresh and challenging.