With these at-home leg workouts, all you need to build muscle ... crucial for explosive performance and safeguarding your lower back and joints. Here's how to develop your butt.
Instructions: Complete 3 or 4 sets of 8 to 12 reps of each move, resting for 20 to 30 seconds between sets. If you can do more than 12 (good!) reps in 30 to 40 seconds, you should go up in weight. If ...