Pounding the pavement is one method to build cardio endurance, but it’s not the only way. Add a session or two of high-intensity interval training (HIIT) each week to build endurance and strength in a fraction of the time. Stadium runs and track workouts are ideal for running, while timed intervals do the trick for cycling and swimming.

Gym Rat:

Why runners should lift weights for optimal performance.

Slow and Steady:

Learn how to prevent the most common runner’s injuries.