Why do citizens crack their knuckles?

1) Why do people crack their knuckles? 2) What gives them the urge to crack their knuckles? 3) Why does the knuckles make that popping nouns they do it?
and 4) What kind of friction happens between the joints to create that "popping" nouns?
Answers:
Much the same reason population bite their nails. It becomes habit after a while and for some strange grounds its considered satisfying.

Cracking your nails is pretty much lubricating the joint, their are gasses surrounded by your fingers at the joint that can move and lubricate it when you crack it, making the fingers feel better and smoother when you move them. The popping sound is in actuality the gas very suddenly moving when you crack them.

But basically, its just habot.
1: I've always thought it was to release pressure within the knuckles and increase mobility.
2: I guess the urge comes from the good feeling of relief, and expectation of better dexterity.
3: I think the popping sound comes from the sudden release of pressure; however, I think that if it's not done correctly, the nouns might be also from friction.
4: I think the friction is sudden, when done incorectly, which means the force-time-acseleration factor could be causing make worse, maybe.
it's popping the small bags of liquid contained by between the bones of your fingers. i do this because it feels good once in a while. It also make my fingers less stiff
Releases stress contained by the joints I guess. Some cracks in the body are not personally forced. They purely happen. It's the same reason why you streach. Have you ever twisted your torso to crack your subsidise? It's to release friction on your spinal cord, because the spinal cord is meant for the four legged creatures not two legged. Everyday our spinal cord is very stressed. Cracking joints within your body can be forced or not be forced, when you move it will crack without your help. You only hear the crack commotion when the stress pressure is really high.
1)i crack my knuckles cuz it feels apt and its addicting lol
2)i saw my mom cracking them so i tried it. i can now pop my knuckles 5 different ways and i can also pop my neck and back.
3)the din is sanovial(probably not spelt right lol) fluid between your joints.
4)idk lol
the answer is relatives crack there knuckles because sometimes they have alot of stress or nerves some crack them because either they get hurt or want to hear the cracking noise but i crack my knuckles because i always stretch in the morning and it seem that knuckles need to stretch to laugh out loud but they actully crack instead i deduce the popping sound comes up by the two mucles cracking or moving towards each toher to create that actuale noice ( i,m not sure of this yet))) i don't really knoe about the friction but i,m sure i,m find out and bestow you more information Source(s): I JUST GUESSED!!
habit
1) It's addicting, which becomes a habbit. It also feels correct cuz it gives your fingers more flexibility i think.

2) After a while it just become a habbit and usually when peoples' fingers get stiff they would crack their knuckles.

3) Its just the way it is. You dont needa verbs about things like that.

4) Not sure
1. It's fun and makes you look bada**
2. To look bad*ss *cracks knuckles*
3. Someone told me it's gas? LMFAO
4. I don't know really....
feels good
they get stiff
i see a chiropractor regularly and he explained that plentiful tests were done and it isnt bad for you within any way. Its just the sounds of the bone releasing tension
its not friction its close to when you put a cup of glass on a puddle of water and u remove it its a little sticky and it makes a popping resonance.

or a better example would be when you open a bottle with certain lid that when you open them they pop- ex. nestea, snapple. Its the releasing of air
It's not friction, it's air in between the joints. It cause slight discomfort b/c there is a small air pocket between the bones, so cracking the air out alleviates the discomfort.
1) it feels good 2) at lowest possible for me, my joints feel like they enjoy pressure on them and the pressure feeling goes away when i crack my knuckles 3) when you crack your knuckles there are little bubbles that form and manufacture the popping noise 4) its not friction its the bubbles
also, cracking your knuckles doesnt lead to arthritis...
here's an article on it....
http://ask.yahoo.com/20020828.html
I dont know but the nouns makes me sick ! And its bad for people cracking their knuckles inflict yuou get arthritis when you get older.
1) Because I don`t know they're bored and just feel like it.
2) Maybe if they're knuckles discern all tight or they're addicted on cracking their knuckles.
3) In science class, I learned that when you're cracking your knuckles you're letting air surrounded by between your bones. Gross, but true.
4) Read answer for #3
I don't know answers 3 and 4, but I crack my knuckles because it's fun and feels good. And the reason I own urges to do it is because my fingers feel stiff if they haven't been popped in a while.
1. thats in reality a good question, but i'm not sure.
2. Maybe the muscles or nerves feel tight, so they want to loosen the attitude.
3. Maybe they just have to "POP" it back into place :]
4. Not sure, kinetic friction i have an idea that.

Hope this helped you out!
idk... it's like, a weird feeling that you bring in your fingers that only feels better after you crack them. idk what make the noise. sorry. :P
1. I enjoy no idea, I hate when people do.
2. Again I own no idea, they must like the sound lol
3. The body fluently does it.
4. Google it.
People crack their knuckles because it feels good and is a habit. The apology why cracking knuckles makes that popping sound is because you are separating your finger from the joint and releasing gas to be exact trapped inbetween the joints back into your bloodstream. I can't remember but i think it's nitrogen. On further document, for all you people who say that cracking cause arthritis... your wrong. To this date there has been no specific evidence that it in fact causes arthritis. It was just some myth from a long time ago to put together people stop cracking because it's annoying. So if you dont have any joint problems after feel free to crack away =P
1) It give them a sense of self accomplishment and coolness 2) They want a sense of self accomplishment or coolness. 3) The bones are popping back or pushing out of their sockets. 4) Please see answer 3
It makes them feel better
Uncomfortableness
I don't know
What do you mean?, within aren't many kind of frictions, it just friciton between the bones
some people just get hold of the urge to crack them.

the real question is - why do people receive grossed or breeped out when other peopl do it?

lol,http://www.youtube.com/watch?v=SifhZkZPgzA
1:habit
2:nerves
3:air bubbles between the joint being popped
4:the joints rub against each other until the bubble is popped
1 relatives crack their knuckles because it feels good to them
2 maybe showing ppl they are tough , nerves
3joints popping against respectively otheer
People crack their knuckles for many reason. Some do it because they can. Some do it because their hands feel "tight".

It's not an urge, it's a habit.

The nouns you hear is actually an air pocket being released from your cartillage.

Contrary to popular belief, this cannot medically front to arthritis.
because they re bored because it feels good because they similar to the sound 3) ive heard that its liquid escaping the joint but idk 4)sliding friction?
Once you crack your knuckles it feels good next you can't stop, i am addicted to cracking my knuckles so don't start! :)
Not sure about #4 but they (some) do it to relieve stress and some out of Habit but whatever it is its not apposite to do it can cause arthritis
I think race do it because it feels as though there is tension in that in their hands and after they do it, they feel more nouns and feel more free in that area. I cogitate after using your hands and fingers all day, some description of tension builds up and cracking is a way to relieve the tension.
because its a relief to do it it feels good after u crack them trust me i use 2 do it but cant presently cause when u crack them it always makes ur fingers bigger!
1) people enjoy the sentiment
2) usually a stiff feeling in the joints
3) nouns between the cushions of the joints (known as the cartilage).
4) no friction is made, as the cartilage between the joints is protecting them. its speculation that cracking joints cause arthritis, as arthritis is usually caused by poor diet or genetics attributing to the breakdown of cartilage between joints.

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