XC Running/Track: The Best Workouts for Developing Aerobic Fitness
A study revealed that a 4 X 4-minute interval running workout provided the most effective workout for improving aerobic fitness. ... (to read the remainder of this article, please log in below.)
The resource you have requested is available only to current members.A study revealed that a 4 X 4-minute interval running workout provided the most effective workout for improving aerobic fitness. ... (to read the remainder of this article, please log in below.)