Sexual sadism disorder is the condition of experiencing sexual arousal in response to the extreme pain, suffering or humiliation of others. Several other terms have been used to describe the condition, and the condition may overlap with other conditions that involve inflicting pain. It is distinct from situations in which consenting individuals use mild or simulated pain or humiliation for sexual excitement. The words sadism and sadist are derived from the French writer and libertine Marquis de Sade, who wrote several novels depicting sexualized torture and violence. Related terms and conditions
Current terminology
Sexual sadism disorder is the term employed by the current version of the Diagnostic and Statistical Manual (DSM-5) of the American Psychiatric Association. It refers to the "recurrent and intense sexual arousal from the physical or psychological suffering of another person, as manifested by fantasies, urges, or behaviors" (p. 696). It is classified as one of the paraphilias, called an "algolagnic disorder" (p. 685), which is one of the "anomalous activity preferences" (p. 685). The formal diagnosis of Sexual Sadism Disorder would apply if the individual has acted on these urges with a non-consenting person or if the urges cause significant distress to the individual. Sadomasochism appears in the current version of the International Classification of Diseases (ICD-10) of the World Health Organization. It refers to the "preference for sexual activity that involves bondage or the infliction of pain or humiliation" (p. 172), and divides sadomasochism into sadism and masochism according to whether the individual prefers to be the provider or recipient of it.
In a small study of factory workers in good health, wearing compression garments helped to reduce edema and the pain associated with edema. A small study of runners found that wearing knee-high compression stockings while running significantly improved performance.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. In France, a study of 6265 persons 65 or older found an inverse correlation between calf circumference and carotid plaques.Calf augmentation and restoration is available, using a range of prosthesis devices and surgical techniques

Training and Exercise
The calves can be isolated by performing movements involving plantarflexion (pointing the toes down). 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.