Use momentum in standing calf raises. You need to train your calves heavy, and a little momentum is going to help you maximize the load. Many people get the heavy part right, but where they go wrong is with their quarter-rep bouncing. So don’t go overboard with momentum. I’m not talking about loading up a ridiculous amount of weight on the seated calf raise and using your Achilles tendons like springs. I’m talking about the standing calf raise in particular, using a jumping-type motion to begin the movement, and finishing it with a full, peak contraction. – Michael Mylonas