By the way, doctor: Why do I yawn when I exercise? – Harvard Health


Have you observed that you yawn once you see someone else yawn? šŸ˜€ Why is that? And of course, you yawn when you wake up and then before you sleep. Why exactly do we yawn and specifically when we exercise? This post just may have the answer. https://www.health.harvard.edu/newsletter_article/by_the_way_doctor_why_do_i_yawn_when_i_exercise

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