Huanjing bunao information

Huanjing bunao
Huanjing bunao technique of pressing the heel on the perineum to prevent ejaculation and conserve one's Yuanqi ("vitality"), 1875 Daoyin tu (導引圖, Drawings of Exercises)
Chinese name
Traditional Chinese	還精補腦
Simplified Chinese	还精补脑
Transcriptions Standard Mandarin Hanyu Pinyin Huánjīng bǔnǎo Wade–Giles Huan2-ching1 pu1-nao3 Yue: Cantonese Jyutping Waan4zing1 boui2nou5 Middle Chinese Middle Chinese  Zjwentsjeng puXnawX Old Chinese Baxter–Sagart (2014) *S-ɢʷentseŋ cə-pˁaʔnˁuʔ
Korean name
Hangul	환정 보뇌
Hanja	還精補腦
Transcriptions Revised Romanization hwanjeong bonoe
Japanese name
Kanji	還精補脳
Kana	かんせい ほどう
Transcriptions Romanization kansei hodō

Huanjing bunao (traditional Chinese: 還精補腦; simplified Chinese: 还精补脑; lit. 'returning the semen/essence to replenish the brain' or coitus reservatus) is a Daoist sexual practice and yangsheng ("nourishing life") method aimed at maintaining arousal for an extended plateau phase while avoiding orgasm. According to this practice, retaining unejaculated jing (精, "semen; [medical] essence of life") supposedly allows it to rise through the spine to nourish the brain and enhance overall well-being. Daoist adepts have been exploring various methods to avoid ejaculation for more than two thousand years. These range from meditative approaches involving breath-control or visualization to manual techniques such as pressing the perineum or squeezing the urethra.

In traditional Chinese medical theory, the shen (腎, "kidney") organ system was considered the reservoir for semen, bone marrow, brain matter, and other bodily fluids. However, in actual fact, huanjing bunao often leads to retrograde ejaculation, which redirects the semen into the bladder, from where it is expelled along with urine. Anatomically speaking, circulating seminal fluid or "seminal essence" throughout the body is impossible. While this ancient Chinese practice has historical and sexological significance, its physiological effects do not align with the traditional beliefs surrounding it.