Wendy Zukerman

They got this blood testes barrier.

So here's Justin again.

And so it protects the sperm from a whole bunch of things like inflammation.

So they love it in there, love it in the testicles, but eventually the body's like, you've got to move on.

And the spermies get pushed along to this wiggly, tightly coiled tube, which is called the epididymis.

It's like high school, like a little high school for sperm.

It's a bit stressful.

And when they're in the epididymis, they can get exposed to things like oxidative stress, other things that can damage DNA.

Ah, okay.

But yeah, if you ejaculate more often, you're not hanging out in that place for longer.

And then so I guess my question was, what is the optimum time to wait then?

And if you're trying to make a baby the old-fashioned way, like through sex rather than IVF, you need to balance quality and quantity.

Uh-huh.

Because if you are jerking off too many times, the quantity will go down.

Yeah.

And you still need numbers.

Yeah.

So Brent, the fertility specialist in Minneapolis, told me like basically as you're heading into that fertile window with your partner, they're about to ovulate.

Yes.

Try not to have ejaculated for, he says, two to five days.