Combine Any of These 25 Dumbbell Exercises For a Great Lower-Body Workout

How to do a dumbbell box step-up:

• Find a sturdy bench, coffee table, wooden box, or kid's chair that allows your knee to be at about a 90-degree angle or larger when you place your foot squarely on it.
• Hold a dumbbell or kettlebell in each hand by your side (or, for a more advanced version, in the front rack position at your shoulders).
• Step your right foot onto the box, and press into that foot to stand up on the box. Place the left foot down next to the right.
• Softly step the right foot back to the ground, then the left. That's one rep.