Most people think that a man’s early morning erection is caused by the bladder being filled with urine and the penis being stimulated, but it is not. Men’s nighttime and early morning erections are now proven to be strongly related to REM sleep. From a physiological point of view, an erection is actually a nutritional “replenishment” of the sexual organ by increasing the inflow of oxygenated blood through the penis in an extended manner. In other words, this is a self-charging of the man’s sexual organs, reserve sexual energy to facilitate the process of fighting again. Therefore, the more spontaneous nocturnal erections a man has, the stronger his sexual ability, and the more resilient his erectile tissue is when he makes out with his sexual partner. American physiologists have also done a lot of research and found that men who get enough sleep to get an erection and hold on to it for a longer time than men who are chronically sleep deprived do. The quality of sleep is important to maintain the sexual performance of men. If you need to work or love the night life when the night owl, arbitrary destruction of sleep patterns, arbitrary deductions of sleep time, resulting in NREM sleep period and REM sleep period disorder, will inevitably lead to the phenomenon of early morning erection. In order to make your male masculine long in, 7-8 hours of normal sleep every night can not be saved a minute. No matter how busy you are, you must do everything you can to get a good night’s sleep and give your nighttime spontaneous erections plenty of time and opportunity. Dr. Fisher, who has been studying the relationship between sleep and sex in the United States, famously said that sleep is the driving force behind sex. He said that human sleep is divided into two modes, one is called non-rapid eye movement sleep (NREM sleep), which is manifested as deep sleep for about 1.5 hours; the other is called rapid eye movement sleep (REM sleep), which is the peak of dreaming and begins after deep sleep and lasts only about 30 minutes. The two modes of sleep, which last a total of 2 hours and are repeated 4 times, are the main sleep patterns of adults at night. Since men have erections during REM sleep, they can have as many as four erections overnight, each lasting up to an hour, unconsciously.