It is easier to ejaculate when entering from behind, usually because the male is in the absolute dominant position during sex when using the rear entry position, and it is easy to stimulate the penis to reach the ejaculation threshold and ejaculate. At the same time, the angle of the male genitalia and the female vagina are more consistent during rear entry, so the penetration is usually deeper and tighter, so it will make ejaculation faster. However, if you often take the rear-entry style and usually ejaculate within 2 minutes, you should consider whether there is a possibility of premature ejaculation, and if this happens, it is recommended to consult a doctor for further treatment.