This exercise is suitable to train the calves.
Step on a step pad with the front part of your foot. Stretch your legs so that your knees remain a slightly bent (the joint should not strain). Go on tiptoes, on your big toe, hold it then let it go back. You can hold your feet straight, you can turn your toes inside or outside, this way always a different part of the muscle works. You can also hold a dumbbell, this way it is harder. You can perform with both legs as well or even with one leg. Perform the exercise slowly with big motion range and not in a fast pace.