What makes muscles grow? - Jeffrey Siegel

TED-Ed Channel Youtube
Views 6,253,508 112874 1344

Published on Nov 03, 2015

View full lesson: https://ed.ted.com/lessons/what-makes-muscles-grow-jeffrey-siegel

We have over 600 muscles in our bodies that help bind us together, hold us up, and help us move. Your muscles also need your constant attention, because the way you treat them on a daily basis determines whether they will wither or grow. Jeffrey Siegel illustrates how a good mix of sleep, nutrition and exercise keep your muscles as big and strong as possible.

Lesson by Jeffrey Siegel, animation by Brett Underhill.

Categoy: Education

ted ted-ed tedx ted education muscles health fitness exercise bones nervous system cytokines hypertrophy protein insulin growth factor genetics testosterone jeffrey siegel

  • Kuldeep Kaur - Channel Youtube
    Kuldeep Kaur - 31 minutes ago

    This guy built so much muscle that he is now busy destroying half of the universe and he shaved as well

  • THE paSsionate aRtisT - Channel Youtube
    THE paSsionate aRtisT - 10 hours ago

    2:54 i died 😀😀😀😂😂

  • Fortified Mentality - Channel Youtube
    Fortified Mentality - 1 day ago

    2:35: key point for all you body building enthusiasts.

  • Havla Fitta - Channel Youtube
    Havla Fitta - 1 day ago

    When skipping leg day becomes scientific

  • Michael delos santos - Channel Youtube
    Michael delos santos - 1 day ago

    So can i smash the heck out of mu muscles and get some big bulky arms?

  • A crying normie - Channel Youtube
    A crying normie - 2 days ago

    bull shark testosterone

  • Michael Schroble - Channel Youtube
    Michael Schroble - 2 days ago

    The purple cartoon guy is like to many dudes in real life. FORGOT ABOUT/SKIPPED LEG DAY!

  • Sebastian - Channel Youtube
    Sebastian - 3 days ago

    is that thanos?

  • Paulina Kuhn - Channel Youtube
    Paulina Kuhn - 4 days ago

    latter terms whose plane examine style mechanism peaceful launch.

  • the shadowknight - Channel Youtube
    the shadowknight - 4 days ago

    Is that thanos?

  • Andrew Escalante - Channel Youtube
    Andrew Escalante - 4 days ago

    if you dont have reason to be there dont open the door

  • toast warrior - Channel Youtube
    toast warrior - 5 days ago

    Thanos skipped leg day

  • Ranggi Sistama - Channel Youtube
    Ranggi Sistama - 5 days ago


  • SidharthXO - Channel Youtube
    SidharthXO - 6 days ago

    More reps or More Weight?

  • Box - Channel Youtube
    Box - 6 days ago

    Skip legs, eat, sleep, and repeat.

  • Dao - Channel Youtube
    Dao - 6 days ago

    No leg day sad

  • Evans Timoleon - Channel Youtube
    Evans Timoleon - 7 days ago

    Thanos working out💪

  • xJacob. - Channel Youtube
    xJacob. - 1 week ago

    leg comment incoming

  • Kioki The Machine - Channel Youtube
    Kioki The Machine - 1 week ago

    When I sit down there is a huge line near my belly button cause I have a pot belly.

  • Diesel Burner - Channel Youtube
    Diesel Burner - 1 week ago

    The air gasping chick lmao

  • Hrangaolou Agu - Channel Youtube
    Hrangaolou Agu - 1 week ago

    420 fam

  • Rudy Labsilica - Channel Youtube
    Rudy Labsilica - 1 week ago

    But why the skinny legs though? Lol!

  • Gaming with Pandorum31 - Channel Youtube
    Gaming with Pandorum31 - 2 weeks ago

    Lmfao @themusclekiss

  • Foxe Chen - Channel Youtube
    Foxe Chen - 2 weeks ago


  • QUEENDOM - Channel Youtube
    QUEENDOM - 2 weeks ago

    Hard work. Thats what.

  • samuel malm - Channel Youtube
    samuel malm - 2 weeks ago

    Well, this would be an old explanation, regarding the damage-repair process. That is not how it works! https://www.ncbi.nlm.nih.gov/pubmed/22487949

  • Quốc Vỹ Trương - Channel Youtube
    Quốc Vỹ Trương - 2 weeks ago


  • Red Headed Kid - Channel Youtube
    Red Headed Kid - 2 weeks ago

    It's thanos

  • Sassy The Sasquatch - Channel Youtube
    Sassy The Sasquatch - 2 weeks ago

    So what about if you were just pushing on a wall surely that would cause tears and there is a huge threshold you can achieve because as you grow muscles you can just push harder on the wall?

  • ejaj ejsj - Channel Youtube
    ejaj ejsj - 2 weeks ago

    Comment section 100% -: don't skip the leg day 0% -: other's Lol