The single-leg standing dumbbell calf raise develops size and strength in the lower leg.
Grab a dumbbell in one hand and stand with the balls of your feet on a weight plate. Lift one foot off of the plate and cross it behind your calf. The dumbbell should be on the same side as your supporting leg.
Press the ball of your foot into the plate and raise yourself up as high as possible before returning to the starting position.
Make sure to drop your heel as far as possible to achieve the greatest stretch.
Keep your supporting leg straight throughout the movement.
Be sure to squeeze the calf at the peak extension of the movement.