When androgens are too low, specific features include decreased physical performance, emotional abnormalities, and hypogonadism. 1. Decline in physical performance: Androgen is mainly testosterone, which has the function of maintaining muscle strength and quality. If androgen is low, there may be a decrease in muscle tissue, an increase in fat, and a decline in physical strength. 2. Emotional abnormalities: mainly manifested as depressed mood, inattention, forgetfulness and so on. 3. Sexual dysfunction: manifested as difficulty in penile erection, decrease in erection hardness and number of erections, decrease in sexual activity, lack of libido and so on. If the above discomforts occur in daily life, it is recommended to consult a doctor in time to clarify whether there is a problem of low androgen level. If necessary, standardized treatment should be carried out in accordance with medical advice.