No matter what the sport Carlo Pinsoglio Juventus Jersey , most experts agree that athletes and fitness enthusiasts should cross train. For injury prevention, muscular balance, and improved performance, most top athletes today do more than 1 kind of exercise.
That was not always the case. Back in 1972, Frank Shorter proved he was the best marathoner in the world when he won the Olympic gold medal. Although I remember reading stories about how Frank liked to cross country ski during the winter, I doubt he did anything except run in the months leading up to the Olympics.