The sexual response cycle has four phases: arousal, plateau, orgasm, and resolution. Each stage is part of an ongoing process of sexual response, and there is no definite beginning or end.
Adrenaline and dopamine are released into the air. Your heart rate increases and your blood pressure decreases as a result.
Increased blood pressure causes more blood to flow everywhere. All sensitive parts of your body, like your neck, get extra sensitive here due to blood flow and hormones.
This gives men erections because the tissue is filled with blood.
The muscles in their nipples contract in response to sexual arousal, causing them to become erect males.
When having sex with a life size sex doll, many of the muscles in the body (depending on the position) feel more pleasure and release hormones due to the stimulation.
You have it in two tiers for the men. The first would be the contractile force of the semen entering the urethra and coming from the bladder to orgasm. The urethra and penis go through two phases, the first being the contraction of the urethra and the second being the contraction of the penis. Sperm is ejected from the body when it is ejected from the body.
When they start having orgasms, dopamine, prolactin, oxytocin, phenylethylamine, vasopressin, serotonin, and some other endorphins are released.
You feel like you're on drugs when you're feeling calm and happy. Everything starts to return to normal after your heart rate slows down.