HairBolus: Sperm quality isn't all that much of a continuous variable. There is normal quality which works fine for impregnation and various degrees of abnormal which don't work as well or at all. I don't think there is such a thing as superior quality which is a better impregnator than non abnormal sperm.Some things like illness, injury, malnutrition, etc. can affect quality but such things are not reflected in vocal pitch.I think a more interesting study would be to see if flamboyant gay men tend to have low quality sperm.
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