Hofheimer says that race pace workouts are a great time to practice good running form, as well as fueling for marathons.

Want to run faster, avoid injury, or build consistency? We have workouts for you.

Step one foot behind you. Bend both knees to 90 degrees to lower down in the lunge. Pause for a moment, then press through ...

HIIT can help improve speed and power, but longer, steadier workouts that you can do regularly, like swimming and rowing, are ...

Learn how Peloton instructor Rebecca Kennedy helps make winter the easiest season to stay active and build a consistent ...

Apple Fitness Plus covers everything including classes, narrated walks and challenges.