12 Mind-Blowing Facts About Your Body (part 2)
12 Mind-Blowing Facts About Your Body (PART 2) 7. When We breathe, We Favor One Nostril Dr. Foster said: "We naturally tend to alternate from one nostril then the other as this helps keep the air we breathe moist so as not to irritate our lungs. "But our bodies give one nostril a break while the other is active – we just don't know we do it." 8. We Don't Know Why We Yawn Dr. Foster said: "Many animals seem to do it, and there are different theories as to why we do—some say it helps get more oxygen in, others think it helps regulate temperature. "Either way, we all do it, we just don't why." 9. Eyes Remain Almost the Same Size Your Entire Life Copeland said: "Although our nose and ears keep growing throughout our lives, our eyes remain the same size from birth. "By three months, our eyes are the same size that they will ever be as the corneas have reached their full width." She quotes Cornell University neurobiologist Howard C. ...