ทวีตที่ปักหมุด

1. Ever wonder why footballers spit every 5 seconds?
When players exercise frequently, it triggers a protein called MUC5B, which turns the saliva into a thick, sticky glue that’s impossible to swallow.
If they don’t spit it out, they’d literally choke on it while running.
preye🤎@tessysmitha
What’s a creepy fact about the human body you wish you never found out?
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