Discover why easy running and Zone 2 training are essential for building a strong aerobic base and improving endurance. Learn how to understand your heart rate zones, assess your effort and make the most of your easy runs.

Fartlek is a fun and flexible running workout that combines faster and slower sections without following a rigid structure. Discover its origins, benefits and how to include it in your training to improve speed, endurance and adaptability while bringing more variety and enjoyment to your runs.