via collective-evolution.com/2020/08/04/study-exercising-with-mask-induces-a-hypercapnic-hypoxia-environment-not-good/
What Happened:A recent study published in the JournalMedical Hypothesis titled "Exercise with facemask; Are we handling a devil's sword? -- A physiological hypothesis"claims the following: Exercising with facemasks may reduce available
post_ID = 2056