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

I have low potassium and magnesium and it tastes like penny’s, I get muscle weakness, it feels like my legs are cooked noodles, and they get very heavy.

Talk to your doctor about a blood test. But its probably something else.

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