For decades, lactic acid has taken the blame for the muscle pain you feel when you exercise - but does it really deserve its bad reputation? Hosted by: Hank Green SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at www.scishowtangents.org ---------- Support SciShow by becoming a patron on Patreon: www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters: Alex Schuerch, Alex Hackman, Andrew Finley Brenan, Sam Lutfi, D.A. Noe, الخليفي سلطان, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Patrick D. Ashmore, charles george, Kevin Bealer, Chris Peters ---------- Looking for SciShow elsewhere on the internet? Facebook: www.facebook.com/scishow Twitter: www.twitter.com/scishow Tumblr: scishow.tumblr.com Instagram: instagram.com/thescishow ---------- Sources: pdfs.semanticscholar.org/3df9/b0e32f6223e85af1427bd4b2a6443b789d06.pdf www.jbc.org/content/48/1/153.full.pdf www.physiology.org/doi/pdf/10.1152/ajpregu.1984.246.4.R409 www.tandfonline.com/doi/abs/10.3109/10408369109106865 www.sciencedirect.com/science/article/pii/S001448271000282X www.merckmanuals.com/professional/endocrine-and-metabolic-disorders/acid-base-regulation-and-disorders/metabolic-acidosis www.physiology.org/doi/full/10.1152/ajpregu.00114.2004 Image Sources: commons.wikimedia.org/wiki/File:Archibald_Vivian_Hill.jpg www.istockphoto.com/photo/young-asian-woman-got-back-pain-gm936377676-256154263 www.istockphoto.com/photo/young-asian-woman-got-back-pain-gm936377676-256154263 www.istockphoto.com/photo/lightning-field-gm96003006-3028312 www.istockphoto.com/vector/graphic-of-a-mad-scientist-with-tesla-coils-gm165609699-7446210 www.istockphoto.com/photo/cross-section-through-a-muscle-with-visible-muscle-fibers-gm961867702-262676023 commons.wikimedia.org/wiki/File:Otto_Fritz_Meyerhof.jpg www.istockphoto.com/photo/map-marker-gm908241424-250212078 www.istockphoto.com/vector/gold-medal-for-first-place-winner-award-isolated-on-white-background-flat-style-gm1042297510-279047793 www.istockphoto.com/vector/vintage-pop-art-style-surpised-and-excited-comic-girl-saying-wow-vector-illustration-gm884626990-245908898 www.istockphoto.com/photo/exposed-copper-wire-gm173692435-7886385 www.videoblocks.com/video/girl-runs-through-the-park-in-the-morning-sporty-young-attractive-brunette-woman-running-on-empty-road-in-the-morning-slow-motion-only-legs-b06f-5e8zj5f1zatl www.videoblocks.com/video/alpha-channel-flames-and-fire-4-eprgrud