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 https://www.scishowtangents.org
----------
Support SciShow by becoming a patron on Patreon: https://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: http://www.facebook.com/scishow
Twitter: http://www.twitter.com/scishow
Tumblr: http://scishow.tumblr.com
Instagram: http://instagram.com/thescishow
----------
Sources:
https://pdfs.semanticscholar.org/3df9/b0e32f6223e85af1427bd4b2a6443b789d06.pdf
http://www.jbc.org/content/48/1/153.full.pdf
https://www.physiology.org/doi/pdf/10.1152/ajpregu.1984.246.4.R409
https://www.tandfonline.com/doi/abs/10.3109/10408369109106865
https://www.sciencedirect.com/science/article/pii/S001448271000282X
https://www.merckmanuals.com/professional/endocrine-and-metabolic-disorders/acid-base-regulation-and-disorders/metabolic-acidosis
https://www.physiology.org/doi/full/10.1152/ajpregu.00114.2004

Image Sources:
https://commons.wikimedia.org/wiki/File:Archibald_Vivian_Hill.jpg
https://www.istockphoto.com/photo/young-asian-woman-got-back-pain-gm936377676-256154263
https://www.istockphoto.com/photo/young-asian-woman-got-back-pain-gm936377676-256154263
https://www.istockphoto.com/photo/lightning-field-gm96003006-3028312
https://www.istockphoto.com/vector/graphic-of-a-mad-scientist-with-tesla-coils-gm165609699-7446210
https://www.istockphoto.com/photo/cross-section-through-a-muscle-with-visible-muscle-fibers-gm961867702-262676023
https://commons.wikimedia.org/wiki/File:Otto_Fritz_Meyerhof.jpg
https://www.istockphoto.com/photo/map-marker-gm908241424-250212078
https://www.istockphoto.com/vector/gold-medal-for-first-place-winner-award-isolated-on-white-background-flat-style-gm1042297510-279047793
https://www.istockphoto.com/vector/vintage-pop-art-style-surpised-and-excited-comic-girl-saying-wow-vector-illustration-gm884626990-245908898
https://www.istockphoto.com/photo/exposed-copper-wire-gm173692435-7886385
https://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
https://www.videoblocks.com/video/alpha-channel-flames-and-fire-4-eprgrud