It can be a wonderful feeling to give your tired eyes a good rub. And rubbing your eyes can help keep them moist, but it turns out it also can affect your heart rate. Hosted by: Michael Aranda SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at http://www.scishowtangents.org/ ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Chris Peters, Matt Curls, Kevin Bealer, Jeffrey Mckishen, Jacob, Christopher R Boucher, Nazara, charles george, Christoph Schwanke, Ash, Silas Emrys, KatieMarie Magnone, Eric Jensen, Adam Brainard, Piya Shedden, Alex Hackman, James Knight, GrowingViolet, Sam Lutfi, Alisa Sherbow, Jason A Saslow, Dr. Melvin Sanicas ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com/ Instagram: http://instagram.com/thescishow ---------- Sources: https://www.sciencedirect.com/science/article/abs/pii/S1542012412702963?via%3Dihub https://www.ncbi.nlm.nih.gov/books/NBK534247/ https://www.sciencedirect.com/topics/neuroscience/limbic-system https://www.ncbi.nlm.nih.gov/books/NBK499832/ https://www.sciencedirect.com/science/article/pii/S2452232516302232 https://www.sciencedirect.com/science/article/abs/pii/S1367048407000835 https://www.sciencedirect.com/topics/medicine-and-dentistry/keratoconus https://www.sciencedirect.com/science/article/abs/pii/S1542012415000324?via%3Dihub Images: https://www.istockphoto.com/photo/his-body-just-wants-to-shut-down-gm1047508094-280192721 https://www.istockphoto.com/photo/woman-cry-while-watching-movie-gm1132041882-299944863 https://www.storyblocks.com/video/stock/close-up-macro-eyes-of-a-black-woman-african-american-woman-portrait-mix-raced-young-female-student-teenager-generation-z-hqsqwprzukllk9kca https://commons.wikimedia.org/wiki/File:Blausen_0614_LimbicSystem.png https://www.eurekalert.org/multimedia/pub/163295.php https://commons.wikimedia.org/wiki/File:Trigeminal_Nerve.png https://commons.wikimedia.org/wiki/File:Recurrent_laryngeal_nerve.svg https://www.istockphoto.com/photo/patient-on-an-eye-surgery-gm1272404892-374683722 https://www.storyblocks.com/video/stock/close-up-tired-mature-man-rubbing-his-eyes-caucasian-man-with-tired-eyes-on-blurred-window-background-vision-problem-concept-hc5k7uw4njrlpzxyk https://www.istockphoto.com/photo/injury-at-work-eye-fatigue-gm1278815932-377630558 https://www.istockphoto.com/photo/middle-aged-man-rubbing-itchy-eyes-gm1293837806-388087395