The fever period is not recommended to have sex, fever is an abnormal state of the human body, is the body’s response to abnormal body conditions, such as the invasion of pathogens into the body, like viruses, bacteria, mycoplasma, etc., and other conditions, such as tumors, parasites, etc., when the fever indicates that the disease is at its peak, and is not a recovery period performance. The human metabolism will increase when the fever, the consumption of energy will increase, so it is more physical, this time the human body should be in a state of rest, in order to better recovery, so in the disease state or rest is better, this time to have sex will consume more physical, for the recovery of the disease is not good.