It happens when it takes a man longer than he’d like to ejaculate. Most men ejaculate within a few minutes of starting intercourse. Men with delayed ejaculation may take between 30 and 45 minutes. Some men are completely unable to ejaculate. Or, they may be able to ejaculate through masturbation but not with a partner.
You have probably heard about testosterone in light of men’s sexual health. Produced by the testes, this hormone drives libido, gives men their physical characteristics (like facial hair), and helps maintain muscle mass.