A 28-year-old man has sex twice a month, which may be normal or abnormal. Under normal circumstances, 28-year-old men have a strong libido, a month of sex usually more than two, but in the work and life, the body overworked, may lead to a reduction in the number of sex, after a reasonable rest, the number of sex may gradually increase, generally do not need to carry out special treatment. In the work and life of the body is not tired, there are a long time twice a month sex life, may be now abnormal conditions, such as loss of libido, may be related to mental and psychological factors, endocrine factors. If you feel unwell, it is recommended that you seek medical advice for appropriate examination and treatment to avoid seriously affecting the quality of your sex life.