Why adjustable desk is better than traditional desk?

Nature did not design the human body to sit still for long hours, sitting too much is seriously bad for your health!
  When you working in long hours, it's important to have the perfect  desk -(ADJUSTABLE DESK)*- to help keep you healthy, active and productive.  
  A standing desk, also called a stand-up desk, is basically a desk that allows you to stand up comfortably while working.

Benefits of using a standing desk, that are supported by science.