Add Some Weight
Holding dumbbells during calf raises increases external resistance, placing more demands on your lower legs. Hold a moderately heavy dumbbell in each hand and stand up straight. Hang your arms by your sides, relax your shoulders and position your feet shoulder distance apart. Shift your weight onto your heels, then push through your heels and lift onto the balls of your feet. Pause in the elevated position, lower your feet to the floor and shift your weight onto your heels. Complete 12 to 15 repetitions, stopping when your calves fatigue.