10 Exact Reasons Why You Should Run

Distance Running

When you increase your pace above 6 mph, you cross the threshold into what is technically running (as opposed to jogging). And when you keep up that pace for more than five miles, you’re “distance running.”

Although popular with all age groups, Kennihan explains that distance running tends to become increasingly attractive to people as they age and begin to lose fast-twitch muscle fibers. “While we can’t run any faster [after a certain age], we can still run longer and longer,” she says. Verrengia adds that distance running is also a great way to build up your cardiovascular health. The mental toughness you get as a result is just a bonus.


Jogging and distance running target your slow-twitch (type I) muscle fibers, which govern endurance. Alternately, sprinting targets the same fibers as weightlifting — your fast-twitch (type II) fibers — and when performed repeatedly in the context of a workout, is a form of high intensity interval training (HIIT). “Speed work, or interval training, encompasses bursts of intense effort separated by recovery periods of slower running, jogging, or walking,” says Kennihan. These types of workouts can help you increase your speed, running efficiency, and fatigue resistance, as well as your power and muscular endurance, she explains.

Speed work is also the most effective type of running workout for shedding fat. But because it is so physically demanding, it should only be performed after you’ve already built a strong fitness foundation through jogging and running.

Running Responsibly

Of course, as with any form of exercise, running has its risks. Sprained ankles and pulled muscles are obvious concerns if you run on uneven terrain or skip your warm-up. But even more insidious are so-called “overuse injuries” — like shin splints, tendonitis, and even stress fractures — which tend to occur when a runner increases his or her training load (e.g., mileage) too quickly, doesn’t allow for sufficient recovery time between workouts, and/or doesn’t facilitate that recovery by performing warm ups, cool-downs, and mobility work (think: foam rolling and dynamic stretching).

To avoid such injuries, make recovery a priority and gradually build up your mileage by no more than 10 percent per week, suggests Kennihan. Verrengia adds that it’s also important to actively work on optimizing your running form, regularly mixing up your workouts (e.g., by incorporating more speed work and hills into your routine), and including more than just running in your exercise regimen. “Runners need to realize that strength work, stretching, muscle release work [a.k.a. massage], foam rolling, [and the like] play an important role in how successfully and healthfully you’re able to run,” she explains.

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