Why Do Joints Pop And Crack? скачать в хорошем качестве

Why Do Joints Pop And Crack?

SciShow explains what really causes those popping sounds your joints make -- fluid dynamics, people! -- and what you should watch out for if you're a habitual knuckle-popper. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/artist/52/SciShow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook:   / scishow   Twitter:   / scishow   Tumblr:   / scishow   Thanks Tank Tumblr:   / thankstank   Sources: http://www.scientificamerican.com/art... http://cal.vet.upenn.edu/projects/sao... http://www.loc.gov/rr/scitech/mysteri... http://health.howstuffworks.com/human... http://www.hopkinsmedicine.org/health... http://www.livescience.com/9729-knuck... https://secure.flickr.com/photos/orij...