muscles of the posterior leg, soleus and gastrocnemius muscle, photo of an athlete

activity adductor anatomy ankle athlete athletic athletics body calf calves exercise extensor fasciae feet fitness foot gastrocnemius gracilis kneecap leg legs longus man medialis muscle muscles muscular pectineus peroneus rectus runner running semimembranosus semitendonosus soleus sports stretches stretching strong thighs tibia tibialis training vastus warming white workout