How to Do Interval Workouts Correctly

  Once the training secret of the world’s best runners, interval training is now done by everyone, from competitive athletes to grandma next door. Emil Zatopek of the former Czechoslovakia, who won the 10K at the 1948 Olympics and 5K, 10K, and marathon at the 1952 Olympics, was the first athlete to popularize interval training. […]

Do NOT follow this link or you will be banned from the site!
© Copyright 2018 Run-Fit.com