Are you ready for a move that works everything – from your shoulders, to your core, to your legs? Complete Fitness’s Jane Grieme recommends the Reverse Lunge with Overhead Press. Begin with a dumbbell in each hand, your chest out, and your shoulders back. Hold the dumbbells at shoulder height and step one leg back into a lunge. Both knees should be at 90° angles. Your front knee should be over your ankle and toes should point forward. After reaching the bottom of the movement, press the dumbbell overhead as you come back to standing position. Lower the dumbbell back to the starting position as you begin to step back into your next lunge. Repeat 12 to 15 times on each side.