How does the competition swim suit help swimmers go faster? --- Doug, Hilton, New York
There are several things that a full-body swim suit can do to speed up a swimmer. For one, it can be smoother than human skin (by using very smooth fabric and no seams). Second, it can be very tight to try to smooth out the bumps of human muscles. It can also contain a girdle to encourage the swimmer to keep a preferred position in the water. For more info see: Can a swimsuit make you swim faster?