Here's what happens to your knuckles when you crack them | what does hm mean on tiktok | #Here39s #knuckles #crack | 2022

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#Here39s #knuckles #crack
Here's what happens to your knuckles when you crack them
One man cracked his knuckles in one hand for 60 years and not the other. Watch the video to see what he found out.

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There’s a long-held myth that cracking your knuckles can damage your hands. The sound definitely might make people around you cringe, but what’s making those noises, and is it actually bad for you?

There’s a space in your joints filled with synovial fluid, a liquid that reduces the friction in your joints when you move. It contains gases (oxygen, nitrogen, and carbon dioxide).

When you pop a joint, you stretch out that space between the bones. That expanding space creates negative pressure, like a vacuum, that sucks in the synovial fluid. It forms bubbles, which then collapse, and that’s what you hear.

Most medical sources agree that unless you experience pain when you pop your joints, you’re probably fine to keep doing it. Researchers (including one man who cracked his knuckles on just one hand for 60 years) haven’t established a connection between cracking your knuckles and arthritis.

One 1990 study of 300 people did find that cracking knuckles over a long period of time led to hand swelling and decreased grip strength, but there hasn’t been any follow-up research on that.

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what does hm mean on tiktok

One man cracked his knuckles in one hand for 60 years and not the other. Watch the video to see what he found out.

Subscribe and turn on notifications 🔔 so you don’t miss any videos:

There’s a long-held myth that cracking your knuckles can damage your hands. The sound definitely might make people around you cringe, but what’s making those noises, and is it actually bad for you?

There’s a space in your joints filled with synovial fluid, a liquid that reduces the friction in your joints when you move. It contains gases (oxygen, nitrogen, and carbon dioxide).

When you pop a joint, you stretch out that space between the bones. That expanding space creates negative pressure, like a vacuum, that sucks in the synovial fluid. It forms bubbles, which then collapse, and that’s what you hear.

Most medical sources agree that unless you experience pain when you pop your joints, you’re probably fine to keep doing it. Researchers (including one man who cracked his knuckles on just one hand for 60 years) haven’t established a connection between cracking your knuckles and arthritis.

One 1990 study of 300 people did find that cracking knuckles over a long period of time led to hand swelling and decreased grip strength, but there hasn’t been any follow-up research on that.

Read it here:

Vox.com is a news website that helps you cut through the noise and understand what’s really driving the events in the headlines. Check out

Make sure you never miss behind the scenes content in the Vox Video newsletter, sign up here:

Support Vox’s reporting with a one-time or recurring contribution:

Shop the Vox merch store:

Watch our full video catalog:

Follow Vox on Facebook:
Follow Vox on Twitter:
Follow Vox on TikTok:

48 Comments

  1. Vox says:

    From popping knuckles to wiggling ears, some of our strangest bodily traits can be traced back to our Triassic mammal ancestors. Watch the video: http://bit.ly/2K0eo8d

  2. Who else just cracked their knuckles and got curious before searching for this video?

  3. 😂the first time is very painful,later your knuckles get used to it and then it no longer hurts

  4. Leah says:

    Thank you for telling me how long it takes for my knuckles to recharge

  5. Nirjala says:

    whenever i do this thing i feel relaxed but when somebody else does, it irritates me….🙂

  6. m3li554 says:

    my fattest pet peeve

  7. I instantly got the urge to pop my knuckles

  8. Cracking my knuckles while watching this

  9. Fun fact: you were cracking your knuckles all this time while watching this video..😅

  10. 유서하 says:

    I always got told that it is bad for me to pop my knuckles. I feel a little betrayed.

  11. I have developed this thing where if I am really anxious or nervous I will continuously pop my fingers over and over again. Even if it hurts

  12. My mom said that my bones will bend and do seem to is this thing true?

  13. Sakhi says:

    3AM thoughts-

  14. everyone here is just cracking their knuckles rn

  15. Luis Crakson says:

    I have been doing this for 27 years now

  16. I've been cracking the joints of my right toes for decades with no ill effects. I like the feeling and the sound (very loud) they make. My wife gets very, very annoyed though–lol!!!

  17. Summum Bonum says:

    It isn't doing anything that could be beneficial. The popping sound is just gas being squeezed out of the lubricating fluid between the joints. That is literally the only thing happening. The gasses build back up again in about 20 minutes.

  18. Idk man, I and my friends pop our knuckles all the time. No one gets annoyed, and even the elderly do it, so idk what everyone's saying. 🤷‍♀️

    It's the same with decompressing the spine. Or Exercising your wrists and ankles, twisting & bending your waist (to stretch) and cracking your neck when you're tired.

  19. I always got told that it is bad for me to pop my knuckles.🤔

  20. Alexandra E says:

    Since arthritis runs in some people's DNA more than others, it's interesting to note that the gas between the joints can actually enlarge the joint, knuckles, and cause displacement. "Popping" the gas out, helps reduce the swelling.

    Also considering that now they recommend you go to a chiropractor or massage therapy to "pop" back joints, again the same gas issue, to help reduce further back inflammation, it's probably a good guess that it's better for all joints when the gas build up is excessive

  21. Zero-San says:

    Give me back my 1:35 minute

  22. James Danger says:

    Why do it in the first place !!??

  23. Why does cracking my knuckles ease pain in my hands? I never thought it was bad for me, since it affords me relief.

  24. Jay DeLeon says:

    any and all over-strectching will reduce strength for a time, likely what that study found.

  25. BugsCODM says:

    Whys my injured leg Pops Every second

  26. PearceProdz says:

    Me cracking my knuckles as I’m watching this💀

  27. Appreciation is a little word for the man performing this experiment for 60 years
    Just wow !

  28. Paulo says:

    People who are annoyed by this sound should mind their own business. It's not fireworks. It's not speaking in a movie theatre. C'mon. 🤦‍♂️

  29. I cracked my knuckles while watching

  30. Probably….. That’s a bad scientific guess word💀💀💀

  31. Nerice Qu says:

    stop this video made me cry and my dog started licking me which I am highly allergic to causing my death!

  32. 0:25 i just need wait 10 sec (i not lier)

  33. Man did his work for 60 years if that ain’t enough y’all are blind lol. U can pop your knuckles just don’t go nuts haha

  34. thank goodness i never cracked my knuckles

  35. thank goodness i never cracked my knuckles

  36. Casey Miller says:

    When my family mentioned that my ‘popping’ habit of my back, neck, and knuckles was annoying… I never felt more offended

  37. Mark Rich says:

    It’s hard to avoid popping them all together

  38. mrmatt24 says:

    It didn't really explain what's going on with the gas in the synovial fluid 🤔

  39. DaCronic1 says:

    I can continuously pop my big toe on my right foot. I’m talking over and over.

  40. SpaceKiller says:

    I just hate it when people pop random things on their bodies like knuckles, it just makes me angry

  41. I am cracking my fingers from when I was 3 years old and it has been 10 years now

  42. As per Ted-Ed video, he experimented 50 years. Not 60.

  43. hitha. M says:

    You get anxiety….

  44. Nah they never get annoyed of my cracking…in fact it satisfies them!😂

  45. David Hall says:

    But yet there are people who make millions of dollars to pop our joints for us. And we pay them to do it!

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