Running coach Tom Craggs explains how this training method, popularised in Sweden, can help you to become a faster and fitter runner| Runner's World
Nikki slid the heart rate monitor onto my arm and fastened it around my bicep, then handed me a laminated piece of paper with a large, colorful bar graph. "During your workout," she said, "the monitor is going to tell you which 'zone' you're in." She pointed to the handout.| Second Breakfast