Anyone who actually believes that generic face masks increase CO2 levels in the human body probably has a hard time wearing one due to their massive, protruding brow ridge. How does that even make sense? It's practically first grade knowledge that literal molecules are smaller in size than even viruses. How on earth do you look at a disposable mask and go "hurr durr, no way a CO2 molecule can fit through this".
I apologize for my condescending tone, but for Christ's sake I'm a college distance runner, and if I can wear a mask at practice, running seventy miles a week, then so can someone running around back and forth on a field. Or someone rolling around on a wrestling mat.
Oh, by the way, athletic scholarships aren't worth much if your athletic capabilities cease to be because of a severe respiratory infection.