It's a common misconception that all you need to become a runner is a good pair of sneakers and the will to get out the front door. "Most people don't understand that running is a skill that has to be learned," says Steve Gisselman C.S.C.S. "You have to train to become faster." Whether you're a weekend warrior or gearing up for a marathon with a specific running schedule in mind, you should be supplementing your runs with additional workouts to strengthen your form and stave off injury. Gisselman gave us 10 drills to help build running strength, and improve cadence, rhythm, and efficiency. Do 2 sets of 5 of each on your run days, and 3 sets of 5 on your off days.