4/$20 - The Compass in Your Nose and Other Astonishing Facts About Humans

Paperback in good pre-owned condition - no marks or tears on pages. Minor wear to covers. Fascinating information on the human body - did you know nostrils switch on and off every three to four hours so that one is always smelling and breathing while the other closes down and rests; chocolate contains the same chemical that the brain produces when people fall in love. By stepping up the heart rate, and the body's energy levels, the chemical causes a happy, slightly dreamy feeling. ....and lots more From smoke-free home 4/$20 - bundle 4 items with this description from my closet and send an offer of $20. NEW TO POSHMARK? Sign up with my promo code PAEDPT and get $15 off your first order from Postmark!