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From diet, to shoes, to movement efficiency, people devote their lives to researching and perfecting the art of running. Meanwhile, cheetahs run 75 mph and they sleep all day. No fair! Ceri caught a plane to run a marathon right after we recorded this! I probably went home and watched TV for four hours. Oh well!   Follow us on Twitter @SciShowTangents, where we’ll tweet out topics for upcoming episodes and you can ask the science couch questions!    While you're at it, check out the Tangents crew on Twitter: Stefan: @itsmestefanchin Ceri: @ceriley Sam: @slamschultz Hank: @hankgreen   If you want to learn more about any of our main topics, check out these links: [Truth or Fail]   https://www.mentalfloss.com/article/12275/treadmill-originated-prisons https://digest.bps.org.uk/2016/10/14/investigating-the-weird-effects-treadmills-have-on-our-perception/ https://www.popsci.com/treadmill-running-illusion/ https://www.ncbi.nlm.nih.gov/pubmed/8692265 (pdf here)   [Fact Off]   Tiger beetle https://www.jstor.org/stable/4009161?seq=1 https://phys.org/news/2014-11-tiger-beetle-fast.html http://news.cornell.edu/stories/1998/01/tiger-beetles-go-blind-chasing-prey-high-speeds   Exotendon https://biomedical-engineering-online.biomedcentral.com/articles/10.1186/1475-925X-2-17 https://scopeblog.stanford.edu/2019/08/20/is-a-rubber-band-the-secret-to-running-faster/   [Ask the Science Couch]   Barefoot running https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4550712/ https://blogs.scientificamerican.com/guest-blog/the-science-of-barefoot-running-a-personal-journey/ https://www.eurekalert.org/pub_releases/2015-03/aaoo-rbm032315.php https://www.apma.org/Media/position.cfm?ItemNumber=995 https://fl.milesplit.com/articles/112223/most-read-article-of-2017-heels-or-toes-what-is-the-best-way-to-run   [Butt One More Thing]   Runner’s diarrhea https://www.ncbi.nlm.nih.gov/pubmed/1556421 https://www.mayoclinic.org/runners-diarrhea/expert-answers/faq-20058107