Why Your Muscles Get Tired But Brain Doesn’t

Why Your Muscles Get Tired But Brain Doesn’t


Host: Thank you, thank you, please take your
seats. Now, what if your boss was constantly torturing and overworking you? I don’t know
about you, but I’d probably be looking for a new job! But that’s exactly what one of
our guests is supposedly dealing with. Let’s get to the bottom of this rocky situation.
Please welcome Brain and Muscle! Host: Ok, Muscle, you’re the one who wrote
in to the show, saying that your boss, Brain, is always giving you electric shocks to force
you to work. Are these allegations true, Brain? Brain: Yes, that’s right. Brain: But he’s lazy! What else can I do
if he doesn’t move without it? He’d be happy to spend his whole life on the couch,
eating junk food and turning into jelly. I have a business to run here, so I literally
have to shock him into action! Host: Muscle, how do you put up with this? Muscle: Well, it’s not easy… But he’s
right, I can’t contract on my own… Host: You don’t say! Care to show us how
it works? Brain: Sure! But let me first call my assistant,
Spinal Cord. Brain: Ok, Spine, just like we always do.
Grab Muscle by the hand. So, I usually just send the impulse to Spinal Cord. And he passes
it on to Muscle. As you can all see, Muscle then contracts. And watch what happens when
I release the impulse. Muscle remains contracted for some time. This is how I get him to work. Host: Impressive! And how many employees like
Muscle do you manage? Brain: I’m responsible for over 650 muscles,
and I never mix them up! Host: Wow! How’s that? Brain: My frontal lobe creates an image of
a movement. Let’s say, we get an order to lift the leg. It then finds out which muscles
need to be contracted to accomplish this task. After that, the information goes to my motoric
region. From there, I send electric impulses to all the muscles I need to stimulate with
the help of Spinal Cord. Host: Well, Muscle, you should be grateful
to Brain. What would you do without him? Muscle: But he’s harsh! I get tired and
can’t move, but he just keeps pushing me! Brain: Psh, tell that to the guys in the Eye
Department. Those muscles make 10,000 movements in an hour! Muscle: So what? I’m stronger than them! Brain: Uh, no, it’s Jaw Muscle who’s strong,
not you! He can close the mouth with a force of 200 pounds on the molars! Host: You have quite the dream team, don’t
you? But why does Muscle here feel so tired? Is it oxygen deficiency, lactic acid build-up?
Hey, I know a thing or two about this business! Brain: No, not at all. Deep within Muscle
there are transverse tubules, or “T-tubules” for short. They house Calcium Channels, which
are like on-off switches. They make Muscle tense or relax. Look what happens when Muscle
exercises for a while. Brain: The calcium channels begin to leak
calcium ions, and this is what happens as a result. First, the build-up of calcium ions
causes Muscle to burn. He’s now working outside his comfort zone. Then, when calcium
ions leak out, this produces an enzyme that attacks and damages Muscle’s tissue. Muscle
feels pain after a tough workout because of this damage. Host: This does seem quite torturous. Look
at poor Muscle! Brain: Well, yeah, he does have to take a
lot. But he’ll be repaired within a day or so. Plus, he’ll become stronger. Host: But aren’t there any other ways? Brain: Nope, this is just how the business
works. But I do know how to make it a bit easier. Muscle: Then why don’t you?! Brain: I do, all the time! Otherwise, you’d
run out of gas after a couple of push-ups. Muscle: Oh, you’re just saying that so you
don’t look bad! I don’t believe you! Brain: Ok, I’ll show you. Long before Muscle
starts burning, I know that the exertion level has been reached, so I send him a signal of
discomfort. This makes him feel exhausted. But I can also use tricks and not send him
that signal immediately. Imagine him strong. Focus on the exercise. I come up with specific
goals that make the motivation to exercise very strong. And Muscle performs past the
point where he feels tired, just like that! Host: That’s impressive. How often do you
train, Muscle? Muscle: Every single day, he never lets up!
He’s a monster! Brain [rolling his eyes]: Moving isn’t exercising!
There’s only one way to make Muscle stronger: train him to his limit pretty frequently.
The more Muscle gets exercised to the point where calcium leakage occurs, the more resistant
he becomes to its effects. The thing is, he soon adapts and rebuilds, repairing the damage.
It helps build not just strength but also endurance. Host: Ok, fair enough. They say you have a
muscle in your team who exercises without rest and never gets tired! Is that true? Brain: Oh yes, Heart. He’s our undefeated
Employee of the Month in the Muscle Department. He pumps about 2,500 gallons of blood non-stop
without ever taking breaks! Host: Ok, let’s meet him. Come on out, Heart! Host: Around-the-clock work – what IS your
secret, Heart? Heart [in a “gym rat” accent]: Brah, listen,
I’m made up of cardiac tissue. That’s like, only in me and nowhere else in the body!
Ladies… Brain: You see, skeletal muscle tires quickly.
If this was to happen to Mr. Heart, it’d cause a heart attack, and our whole business
would fail. We’d all shut down. To avoid that and allow for constant working without
fatigue, cardiac tissue has a different arrangement – it has far more mitochondria, which produce
way more energy in the form of a chemical called Adenosine Triphosphate (ATP). Host: And mitochondria are… Brain: … small organelles within cells.
They’re the powerhouse of the cell. They convert glucose into energy. Having more of
these means Heart will never run out of energy under normal circumstances. Host: Fascinating! But why aren’t all the
muscles in your staff like this? Seems like it’d be a more profitable business! Brain: Actually, no, it wouldn’t. First
of all, Heart is special in that he has so many mitochondria. If all our muscles worked
like him, the amount of energy we’d require would be enormous and unsustainable. Our company
(The Body, Inc.) would simply demand more energy than it can create, and we’d shut
down. Host: Ok, I see that you have a perfect team
as is! Well, that concludes our show today, folks! A big round of applause for our guests,
and for our viewers at home, sound off down in the comments: what other ways do you know
that can help your muscles work hard without feeling exhausted? And if you learned something
new today, then give this video a like and share it with your friends. But – hey! – don’t
go anywhere just yet! We have over 2,000 cool videos for you to check out. All you have
to do is pick the left or right video, click on it, and enjoy! Stay on the Bright Side
of life!

100 Replies to “Why Your Muscles Get Tired But Brain Doesn’t”

  1. cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe cringe

  2. Dude its because brains don't move. Also, whenever you feel mentally tired yet not literally tired, than thats your brain getting tired in a sense.

  3. 4:28 – 'K+' for calcium ions? Don't you mean Ca+
    K+ are potassium ions
    Also why does brain keep licking his lips?

  4. Why was the brain a man's brain? Are you saying female brain's aren't smart enough for your video?? Because i'm a Feminist you know

  5. Unite o forever in friendship and labour
    Our mighty republucs will ever endure
    The Great Soviet Union will live through the ages
    The dream of a people their fortress secure

  6. Hey by doing yoga our muscle never tire(except in some cases) but they grow more stronger and can do much better than a normal exercises โ˜บ๏ธ

  7. Hi beautiful people ๐Ÿ˜„๐Ÿ˜„๐Ÿ˜„

    Have a sweet and great day ๐Ÿคฉ

    Genuine wishes from a small youtuber ๐Ÿ˜„

  8. That was all for a normal young person but what about the old ones? What about the diabetics and hypertensive patients?

  9. this is true, one time my mom told me to do 100 pushups in a day to get some cash and i did in less than 30 mins, my stomach hurts, my arms were weak but the weird thing is that my brain is still strong lol,

  10. When my muscles start burning when I work out I only get uncomfortable not motivated but I still go on not at my best tho

  11. I'm surprised foot doesn't have any complaints about the weight she/it is forced to walk under brains orders. Also not sure if that hear is alive or undead since there isn't any blood leaking out, lol. Loved the video.

  12. wow, what a masterpiece, so informative and creative at the same time, never get bored if all your video format like this.

  13. At 4:10, when you are talking about Calcium ions, you are showing Potassium (K+) ions. Calcium is Ca. Please have someone review these before posting.

Leave a Reply

Your email address will not be published. Required fields are marked *