Scientists believe this is because “there may be a trade-off between the amount of energy a man invests in making sperm, which can be thought of as a mating strategy, and parenting.” Sorry I missed your recital. I was making sperm.
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Scientists believe this is because “there may be a trade-off between the amount of energy a man invests in making sperm, which can be thought of as a mating strategy, and parenting.” Sorry I missed your recital. I was making sperm.
Things you buy through our links may earn Vox Media a commission.