Detailed practices including exercises can be found in several books, such as Mantak Chia's The Multi-Orgasmic Man. It is similar to the Venus Butterfly technique used in the volume The One Hour Orgasm (1988) by Leah and Bob Schwartz. Orgasm control is referenced as 'slow masturbation' in Alex Comfort's The New Joy of Sex (1993) and 'extended massive orgasm' in Vera and Steve Bodansky's 2000 book of the same name. When the controlled orgasm is achieved, the physical sensations are greater as compared to conventional orgasm. When practiced by males, direct sexual stimulation without the refractory period after orgasm is observed. It is practiced alone or with a partner and involves the maintenance of a high level of sexual arousal for an extended period without reaching climax. Edging, peaking, or surfing is a sexual technique whereby orgasm is controlled.
