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M8kMdlErthGr8Again 4 points ago +4 / -0

No damage. If you go too hard too fast you might strain yourself or something, but nothing permanent.

I had a few coughing fits when I first started, but few now.

On the plus side, I can fling snot/phlegm off my larynx now like nobody's business. Great if you have a cold/allergies !