Is excessive popping of the bones dangerous?

Popping of the bones is actually due to small gas bubbles shifting location quickly as the joints are moved or stretched. The bones themselves do not actually make any noise; instead, the noise is caused by the tissue surrounding the bone. Some people find this relieving and some may find it uncomfortable, but in the long run, there's no evidence to show that this phenomenon is harmful. Forceful manipulation of joints, with or without popping, usually by a third party such as a chiropractor, carries a risk of damaging blood vessels or nerves, especially in the neck. However this is very rare.