Coitus reservatus

Coitus reservatus (from coitus, "sexual intercourse" and reservatus, "reserved"), also known as sexual continence, is a form of sexual intercourse in which a male does not attempt to ejaculate within his partner, avoiding the seminal emission. It is distinct from death-grip syndrome, wherein a male has no volition in his emissionless state.

Alice Stockham coined the term karezza, derived from the Italian word carezza meaning "caress", to describe coitus reservatus, but the idea was already in practice at the Oneida Community. Alan Watts erroneously believed that karezza was a Persian word. The concept of karezza is loosely akin to maithuna in Hindu Tantra and sahaja in Hindu Yoga.

Ejaculation control was important for both genders, in Chinese it is called caiyin buyang (traditional Chinese: 採陰補陽; simplified Chinese: 采阴补阳; pinyin: Cǎi yīn bǔ yáng; lit. 'collect yin and replenish yang') for men and caiyang buyin (traditional Chinese: 採陽補陰; simplified Chinese: 采阳补阴; pinyin: Cǎi yáng bǔ yīn; lit. 'collect yang and replenish yin') for women, and was involved in Taoist sexual practices such as huanjing bunao (traditional Chinese: 還精補腦; simplified Chinese: 还精补脑; pinyin: Huán jīng bǔ nǎo), as well as Indian Tantra (where it is known as "asidhārāvrata") and Hatha Yoga (see vajroli mudra), although conventional ejaculation is also endorsed.