ch. 3 v. 42: “When the upper cavity of the palate is sealed by khechari mudra, the bindu or semen cannot be lost even if one embraces a beautiful woman.”
ch. 3 v. 43: “Even when there is a movement of the bindu and it enters the genitals, it is seized by closing the perineum and is taken upward.”
ch. 3 v. 42: “When the upper cavity of the palate is sealed by khechari mudra, the bindu or semen cannot be lost even if one embraces a beautiful woman.”
ch. 3 v. 43: “Even when there is a movement of the bindu and it enters the genitals, it is seized by closing the perineum and is taken upward.”
I would guess that if kechari is practiced correctly that the energy is directed upward therefore discouraging the downward flow that leads to ejaculation.