5 Moves That Work Your Butt Without Wrecking Your Knees

5 Moves That Work Your Butt Without Wrecking Your Knees
Knee pain can be an actual pain in the ass when it comes to strengthening your legs and butt. How are you supposed to build strength in your lower body if one of your major joints down there already hurts? It is possible—and building that glute strength is especially important if you do have bad knees.