The second day after ejaculation, the lack of energy may be caused by long-term masturbation or high frequency of sexual life, uncontrolled sexual life, damage to the male kidney qi, kidney essence deficiency, after the ejaculation of the kidney qi deficiency aggravated, so the second day after ejaculation of the lack of energy. It may also be due to the fact that men move too much and tense their muscles when having sex, which leads to excessive physical exertion, making the body appear to be uninspired the day after ejaculation. The excitability of the cerebral cortex nerves decreases rapidly after ejaculation, leading to a sense of exhaustion in the human body, and thus there is no spirit after sex. It is recommended that men should exercise, swimming, jogging and other sports to enhance physical strength and thus relieve the lack of spirit after ejaculation the next day. It is necessary to control the frequency and number of sexual intercourse, it is not recommended to masturbate and other undesirable behavior, so as not to aggravate the body loss, which in turn leads to the aggravation of the situation of no energy after ejaculation the next day.