Because our ancestors were arboreal, and we've retained enough of those instincts to intuitively know to lower our center of gravity when jumping down and flex our legs on landing to cushion the impact.
By doing so, you minimize side forces on the spinal column, and you minimize risk of injury thereto.
dangerous bend
Forces bend flex.
Yes
giraffes cannot bend there legs-and snakes :)
Flamingos legs bend the opposite way because Flamingo legs are double joined. Just like we cannot bend our legs backwards, Flamingos cannot bend their legs forward. FOR MORE ANSWERS ON ANY QUESTION GO TO WWW.IKNOW.BLOGSPOT.COM
Giraffes can bend their legs. They bend their legs when they want to sit/lay down, to sleep.
you bend the back leg and take your skirt and hold it, and bend your legs
Yes, the wire is what makes her legs bend.
A plie is an equal bend of both legs.
bend your legs then pull up.
They're not really called knees, but yes, they are on the front legs, they bend like our knees, and the back legs bend like our elbows. :) hope i helped
Simple, you cant.
A plie is an equal bend of both legs.
Yes! I am not aware of any dogs / mammals that can't bend their back legs. I have a mini Scnauzer, and I see her bending them quite alot, especially when walking.
Well, you can rest your legs for a couple of hours on a chair or you can strech it and bend it again and again.