Here’s a tip that may get those stubborn calves to start growing again. Consider it more of a machine modification than an exercise modification. Performing calf raises on a rounded platform will increase the range of motion and give you a greater stretch at the bottom and a greater contraction at the top, and ultimately is more comfortable. You could spend a few bucks and pick up a neat calf block platform made by Body Solid, or you can try this rather inexpensive method. It involves a firm half foam roller and a yoga mat. Wrap the foam roller with a yoga mat to prevent slipping, and then place it on just about any calf machine with a flat platform. That’s all there is to it. Reduce the weight a bit and do them in bare feet. You’ll love the feeling!