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Learn a new word every day. On this Wikipedia the language links are at the top of the page across from the article title. The muscles within the calf correspond to the posterior compartment of the leg. Historically, the absence of calf, meaning a lower leg without a prominent calf muscle, was regarded by some authors as a sign of inferiority: it is well known that monkeys have no calves, and still less do they exist among the lower orders of mammals. You can help by adding to it.

Idiopathic leg cramps are common and typically affect the calf muscles at night. Edema also is common and in many cases idiopathic. The circumference of the calf has been used to estimate selected health risks. In Spain, a study of 22,000 persons 65 or older found that a smaller calf circumference was associated with a higher risk of undernutrition. The two major categories of calf exercises are those that maintain an extended knee, and those that maintain a flexed knee. The first category includes movements such as standing calf raises, donkey calf raises and stair calves.

The second category includes movements that maintain a bent knee, such as seated calf raises. Movements with a straight knee will target the gastrocnemius muscle more, and movements with a bent-knee will target the soleus muscle more. However, both variations will target both muscles to a large degree. As the calf muscles are predominantly slow-twitch, they should be trained in a moderate to high repetition range. All repetition ranges offer their own benefits, and as such, calf training should be done in the 5-10 repetition range, the 10-20 repetition range, and the 20-30 repetition range.