2006-09-06 04:52:50 · 8 answers · asked by Presea 4 in Science & Mathematics ➔ Biology
It's just individual variation - just like hair color, weight & height, etc. People aren't all alike and that is only one of the many ways they can differ.
2006-09-06 05:08:13 · answer #1 · answered by yahoohoo 6 · 1⤊ 0⤋
People aren't really double-jointed- it's just a name. Some people simply have longer tendons and ligaments making their joints more flexible. Both my knees bend 5 degrees the wrong way andy my fingers can took my forearms bending backwards. Alas, though, it isn't all aprty tricks. I'm only 25 and have terrible osteoarthritis.
2006-09-06 11:56:00 · answer #2 · answered by big_fat_goth 4 · 2⤊ 0⤋
Don't know, but I'm double jointed in my fingers, elbows and knees, looks really freaky. Great party trick.
2006-09-06 12:03:01 · answer #3 · answered by Wendy M 3 · 0⤊ 0⤋
Hi. If you can trust a total stranger, watch this. She is NOT double jointed but the dance is incredible. http://www.youtube.com/watch?v=tqdjslPovpM
2006-09-06 12:12:08 · answer #4 · answered by Cirric 7 · 1⤊ 0⤋
I guess the same reason some people are blue eyes and some are not!@
2006-09-06 12:20:42 · answer #5 · answered by nswblue 6 · 0⤊ 0⤋
Its a type of mutation they are born with.I use mutation in its technical term.
2006-09-06 11:58:47 · answer #6 · answered by freetibetfighter 3 · 0⤊ 0⤋
There is no such thing!
Some people are just more flexible than others.
2006-09-06 11:56:32 · answer #7 · answered by Captain Eyewash 5 · 1⤊ 0⤋
Because they are X -men
2006-09-06 12:03:36 · answer #8 · answered by Bubbles 2 · 1⤊ 1⤋