Not in itself but the end result can be, parasites aside. I had a friend in high school that ran/exercised (wayyy) too much, studied too much, and needed surge

Not in itself but the end result can be, parasites aside. I had a friend in high school that ran/exercised (wayyy) too much, studied too much, and needed surgery to fix a receding gumline when she was 16 or 17 from overbrushing. That would be just one example.