The calf muscle can be trained with standing calf raises and make sure to always follow-up with a calf stretch.

The calf muscle, on the back of the lower leg, is a two-head and two-joint muscle, and is a powerful plantar flexor of the ankle. It is made up of two muscles: Gastrocnemius, the larger calf muscle, forms the bulge visible beneath the skin. Soleus is a smaller, flat muscle that lies underneath the gastrocnemius muscle.