Cramps in Calf Muscles
Cramps refer to a sudden, painful muscle contraction that occurs by itself (without the voluntary effort of the individual). Such sudden involuntary contractions are called muscle cramps and are caused by over-contraction of a muscle.
Cramps are very common – about 95% of people experience cramps at some stage of their lives. Their probability increases with age. Cramps mostly occur in the legs, most frequently in the calf muscles. There are two calf muscles, the gastrocnemius, a large, bulging muscle on the back of lower leg, and the soleus, another muscle that lies right next to the gastrocnemius.