It also helps if you orgasm and experience lots of pleasure not just sex for the sake of sperm.
No he doesn’t it stinks and knocks off your oh balance if he can’t get off it’s useless that’s what brings it on is the contractions and release of your inner muscles while sanding the thang
But some do say sperm can speed t up it’s not scientific
Its the prostaglandins in sperm that are thought to help (not proven but a nice idea)