Standing,Squatting Birth....

Ok so I been hearing &doing some research that instead of lying on your back in the hospital for birth that it is easier and much more efficient to stand or squat BECAUSE The female is going with Gravity not against it. It also puts less strain on the mothers body . In the UK & in other various countries they Stil practice the squatting or standing technique. I would like to try this when the time comes. Any ladies tried or are doing this for their birthing plan ?? PLease explain   Here is a link below on birthing techniques: http://www.fitpregnancy.com/pregnancy/labor-delivery/position-statement