Fortune reports on the extra thick cushion used by Mark Zuckerberg in a recent Congressional testimony. While many have suggested that he used the cushion to appear taller, the article notes that it could have been used for a medical reason.

"As a matter of fact, a lot of people in this country use a little back support," says Joel M. Press, MD, physiatrist-in-chief at HSS. 

Dr. Press explains how sitting for extended periods of time can put strain on the discs in the back so cushions that offer elevation or extra support can help. Cushions are also used for injuries to the hamstrings, hips, thighs or buttocks.

While an extra cushion isn't likely to be necessary for day-to-day sitting needs, Dr. Press does recommend that the average person uses some support while sitting throughout the workday. 

Read the full article at Fortune.com.