Train to increase your speed in four weeks with a mix of interval workouts, easy runs, and long runs—all of which you can do ...

As a trainer, I've seen firsthand the transformative ... Interval 2: Moderate Incline Walk (3 Minutes)—Increase the treadmill incline to 4-6%. Slow down to 2.8-3.2 mph to maintain control ...

NordicTrack offers a range of treadmills and other at-home workout machines for different fitness levels and preferences.