You don't need a gym membership or fancy equipment to level up your leg workout. Simply add a dumbbell to these simple lower-body exercises. Stand with your feet wider than the hips with your toes ...

The core gets a lot of attention when it comes to aesthetics. But your torso muscles—which include your abs, back, glutes, and hip flexors—play a crucial role in running that goes way beyond looks.

Deadlifting is a classic exercise for a reason: It’s incredibly functional, and it hits a whole bunch of muscles at once. You don’t need a barbell, either: The dumbbell deadlift is actually a more ...