Don’t let hectic days take a bite out of your fitness. This 12-minute full body workout will help you be a master multi-tasker. For legs, hips, arms, and core Hold a five-eight pound dumbbell in each hand, palms forward, and extend your arms down by your sides. Step forward about two feet with your right foot. Then, bend both your legs and curl your arms. Shift your weight forward and stand up until you are balancing on your right leg and your left leg is extended behind you. At the same time, extend your arms behind you (you should feel your triceps flex). Step back to the starting position to finish. Do six reps with your right leg, then switch legs and repeat to complete the set. Build to three sets.