Today’s athletes are all given the common advantage of purchasing contemporary sportswear specifically designed to improve performance regardless of your physical prowess. Twenty years ago, to say that shoes can make you run faster or that a shirt can keep you body temperature lower would have sounded ridiculous. (To think, runners used to complete marathons in Chuck Taylors.) How times have changed. The gym wear that’s available on shelves in the modern era offers guys new fabrics and new technology that give them a literal boost.