From rows to squats and flys to presses, I’ve rounded up my favorite dumbbell exercises for every muscle group. Simple, beginner-friendly, and supremely effective, a set of dumbbells is an ideal way ...

The smoking gun, for me, is the hill sprint at the end of the workout. I can still keep up with some of my younger training partners in tempo runs and mile reps, but when it comes to blasting uphill, ...