Stand up on your toes with your feet close together on a heavy block of wood or any other heavy and stable raised platform. Hold on to something with one of your arms for stability. This is your starting position.
Raise yourself up as high as you can and focus on only using your calves to do this. Keep your legs straight and locked-out at your knees at all times to put maximum emphasis on your calf muscles. Once at the top, lower yourself back down again and go as far down as your comfortably can.
Finally, repeat the entire movement for the desired or prescribed number of repetitions.
Perform this exercise in a smooth and fluid motion
Keep your legs straight at all times
Don't rush this movement; doing it slowly will hit your calf muscles much better
SPECIAL NOTES & LEVEL of DIFFICULTY VARIATIONS
To increase the level of difficulty, slow down the movement or hold a weight plate or dumbbell in your hand and to your side.