GoFlex Gym - On the back of the lower leg, the calf muscle is made up of two muscles: The gastrocnemius is the more significant calf muscle, forming the bulge visible beneath
![Detail of male bodybuilder back leg calf muscles on black background. Gastrocnemius and soleus Stock Photo - Alamy Detail of male bodybuilder back leg calf muscles on black background. Gastrocnemius and soleus Stock Photo - Alamy](https://c8.alamy.com/comp/MD11TY/detail-of-male-bodybuilder-back-leg-calf-muscles-on-black-background-gastrocnemius-and-soleus-MD11TY.jpg)
Detail of male bodybuilder back leg calf muscles on black background. Gastrocnemius and soleus Stock Photo - Alamy
![Bilateral idiopathic calf muscle hypertrophy: An exceptional cause of unsightly leg curvature - ScienceDirect Bilateral idiopathic calf muscle hypertrophy: An exceptional cause of unsightly leg curvature - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S029412601400137X-gr1.jpg)