Alternating Overhead Walking Lunges Stand with your feet hip-distance apart. Hold the plate overhead, locking out your arms and engageing your core. Keeping your belly tight, take a step forward with your right foot, coming into a lunge with both knees at 90-degree angles. Gently tap your left knee to the floor. Immediately step your left foot forward, coming into a lunge, gently touching your right knee to the floor. This counts as two reps. Complete 100 total lunges (50 per side). Image Source: Getty / skynesher