The Jugum Penis Guard- Science isn't always Right

This device was intended as a treatment for "nocturnal incontinence" and to prevent masturbation. It was designed to deter nighttime emissions by causing enough pain to waken the sleeper if an erection threatened.

Until relatively recently, masturbation was considered a moral weakness and at least partly responsible for a whole range of debilitating medical conditions. Now there is some suggestion that the opposite may be true: frequent self-pleasuring could protect against prostate cancer.