Men get up in the morning penis hard in medicine called morning erection, is a normal physiological response. After a night’s rest, the androgen hormones in the body are at their peak in the morning, and the urine in the bladder is already full in the morning, so it is easy to form an erection due to stimulation, and the number of morning erections will continue to decline as you get older. Normal men will start to have morning erections after sexual maturity, and they will become more and more frequent, and the number of morning erections will slowly decrease as they get older. If a man suffers from cardiovascular disease, lumbar spine disease, oral antihypertensive drugs or hypoglycemic drugs, the number of morning erections may decrease accordingly. It is very normal for men to have morning erections, but if they don’t continue to have morning erections, it may indicate a problem, and it is best to go to the hospital to check whether there are organic lesions of the penis.