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do you have any studies supporting this? And where do you think the sweet spot is (assuming you can quantify the amount of cum you have left by...
"but sperm competes so the ones that get to the egg first are the best(are they?) so i'm pretty confused." "don't assert anything without...
of course it isn't but the highs and lows of the quality of the dna in my cum should
no daniels allowed
iirc they have a procedure that takes the highest quality sperm and puts it in the egg so I assume that there are good sperm cells, bad ones and...