Andrew Huberman· PhD
So first one listed is three studies with very high rigor that overall have a minor effect on of all things, sperm quality. So it appears that sperm motility itself, I'm assuming when they say sperm quality I don't know what features of sperm of quality they looked at with sperm, that's not discussion I want to have, but I'm assuming it's motility because I know enough about reproductive biology to know that sperm ability to swim depends on some proteins that are present in the front of the sperm, et cetera things like contractions and sperm motility is generally associated with sperm quality. Sperm that don't move are generally not very useful sperm.