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From: envsci@ucbamber.berkeley.edu (Environmental Sciences)
Newsgroups: net.sci,net.bio
Subject: Reposting of : Knuckle-cracking (why?)
Message-ID: <700@jade.BERKELEY.EDU>
Date: Wed, 14-May-86 17:43:20 EDT
Article-I.D.: jade.700
Posted: Wed May 14 17:43:20 1986
Date-Received: Mon, 19-May-86 00:52:23 EDT
Sender: usenet@jade.BERKELEY.EDU
Reply-To: sadoyama@pavepaws.BERKELEY.EDU (Eric Sadoyama)
Organization: University of California, Berkeley
Lines: 20
Keywords: why so loud?
Xref: linus net.sci:567 net.bio:336

(I'm reposting this since it didn't seem to get past the local machines
the first time.)

This has been bugging me for months.

I often `crack' my joints -- not just knuckles, but toes, elbows, knees,
and especially my neck and spinal vertebrae. The resulting noise is 
startling. I do it because it relieves tension in my joints (or at least
it feels that way).

What makes the noise? And why would this relieve tension? Also, is this
(as my mother repeatedly told me) bad for the joints and will it cause
any problems?

Please MAIL responses to me and I will summarize for the net. Thanks.

Eric Sadoyama / 2033 Haste St. #107 / Berkeley CA 94704 USA
{backbone}!ucbvax!pavepaws!sadoyama or sadoyama@pavepaws.BERKELEY.EDU

(NOT the same address as the originating machine!)