Eli5 Why does saliva taste like blood when you exhaust yourself?

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Why does your saliva start to taste like blood if you ride your bike up a hill or run fast for a while?

Edit: Thanks for the Awards and the nice Comments.
Also blew up bigger than I thought!

In: Biology

14 Answers

Anonymous 0 Comments

It may sound weird, but I experienced it once and got the explanation that it’s because your lungs get rid of the slimy protection film on your bronchia to get more oxygen into your blood. This slim on the other hand can have tiny red platelets which give you that weird blood taste and sometimes coughing afterwards as well.

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