If currently you run only three or four times per week, set a goal to run six or seven times per week. According to the World Health Organization, daily aerobic exercise is required for maximum all-around health. As a runner, you might as well meet this requirement by running. Not only will your health improve but your running will too.

Multi-pace training is, of course, the key to top performance regardless of your target race distance. But that's not the only reason to do all sorts of workouts regularly, from long runs and basic speed sessions to slow recovery runs and tempo workouts. There’s no better way to keep your running interesting than to have peaks and valleys of intens