Sexual performance and reproductive health are not isolated functions of the body. They are deeply connected to sleep quality, diet, hormonal balance, nervous system regulation, and overall vitality. In both modern biomedical science and Traditional Chinese Medicine (TCM), two often overlooked factors—REM sleep and sugar consumption—play a powerful role in sexual function and ejaculation control. This article explores how these elements interact and whether reducing sugar or practicing abstinence can support better sexual health, stamina, and control. Understanding REM Sleep and Sexual Function REM (Rapid Eye Movement) sleep is the stage of sleep where dreaming occurs and the brain is highly active. During this phase: Hormone regulation is optimized The brain processes stress and emotional tension The body undergoes neurological repair Sexual function and libido regulation are recalibrated In men, REM sleep is closely linked with testosterone balance and nocturnal penile tumescen...