Blame it on the protein
71 fun facts that will blow your mind
Why Do Footballers Spit So Much?
TIL in 2004 during the Harvard/Yale Annual American football match, Yale students tricked Harvard supporters to hold up placards, that when raised spelt out WE SUCK : r/todayilearned
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Why is it acceptable for football players to spit all over the pitch, I find it disgusting and totally unacceptable? - Quora
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BBC Science Focus Magazine March 2019 by Immediate Media Company London Ltd. - Issuu
Why do footballers spit so much? Scientific reasons explained
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