Does Lactic Acid Really Cause Muscle Pain?

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

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[Master_Therion]

True, lactate doesn't cause muscle soreness. But it is created through exercise.
Which is why I don't exercise. I'm lactate intolerant.

[maracachucho]

This comment section:
90% comments about Muscle Hank
10% comments about the video
0% comments from Muscle Hank

[Lifeisnow]

I just wanted to say as someone that is currently studying to be a personal trainer with the National Academy of Sports Medicine (NASM) - they have in their official textbook that lactic acid buildup is what causes muscle pain, so this video is super timely! Thanks for setting the record straight, I prefer to have the most up-to-date scientific information! NASM needs to get their ass in gear

[evaristegalois]

Why do I have a feeling that this video was sponsored by Muscle Hank...

[makyx]

My former biology teacher said it did cause it, but because i know he watches scishow i know he wont from now on.

[NewbyTon]

Hank, the master of muscles.
Here to educate us about muscles by moving his mouth and lung muscles

[Silent.Program]

I need a gif of 3:28 : "We have to be accurate, but don't be condescending!" ... And the sparkly text - I love it!
Or even better mugs, Tshirts, EVERYTHING!

[Vinlyguyxx]

I literally misinformed my Mom at the gym with this BS yesterday haha

[banderi]

But... what do I blame my muscle pain on now? It can't be my sedentary lifestyle obviously...

[ThinkHuman]

Thank you Hank for all of your awesome videos, years of interesting, in depth and thought provoking content and most of all for spreading critical thinking and educating people!

[safir]

Scishow is the emchannelment of “Um, Actually...”

[AdityaMehendale]

That's good advice: "Don't forget to be awesome but DON'T BE CONDESCENDING"

[jonathonarenas]

I love it how Hank had to make sure we weren’t going to use this information to be assholes haha.

[TalkativeMime]

My exercise physiology professor hated this misconception. And ranted for a lecture on why lactate gets a bad name

[David_T]

I'm an runner and a LOT of the older publications push the lactic acid theory. Only recent publications stop talking about lactic acid and now just refer to 'acidosis' . Big thanks for publishing this.

[Garrick]

Thanks for showing this, my nutritionist also tells to clear up lactic acid from the body by doing cardio

[HakuOfTheTubes]

Wow, that's actually what I learned in high school, so that line kind of hit me off-guard. Thanks SciShow!

[Zekrow]

Meanwhile, at every gym in the world...

A: "Oh man, I worked out so hard, my muscles hurt from the lac-"
B: "WELL ACTUALLY...."

[lesliewit]

😂😂😂 The "don't be condescending animation" IS KEY!!!

[JoseRamirez-yhll]

Muscle Hank a rarely occurance didn't make an appearance? Must be stuck in the gym