Our bodies are truly a miracle. They help us get around and perform our work, they create life, and they're also capable of giving us amazing physical pleasure. We don't think much about what goes on with our bodies when we're making love, but you might be interested to know what happens to a penis after sex. There are things even males might not be aware of.
There are four phases to the sex act itself, as the Cleveland Clinic explained. In the initial excitement phase, also called desire, our bodies begin to respond to arousal; breathing and heart rate increase, the genitals start to lubricate, and the penis begins to fill with blood and become slightly erect. The erection grows stronger during the second phase, plateau, and the testes also withdraw into the scrotum. The third phase is orgasm, or the climax of the act; here, semen collects and is ejaculated as the penis experiences strong contractions. Finally, in the resolution phase, the partners' bodies return to their pre-arousal stage.
What happens in that resolution phase is a fascinating combination of hormonal and muscular phenomena. It also explains why a second go-round is easier for females than it is for males.