Interval training. Just the words alone can make us shudder. They aren’t your nice, steady state, zone 2 run. No. Instead, they’re sprints, shuttle runs, tempo efforts, hill climbs. None of it is nice ...

Runners of all types rely on run/walk intervals both to train and race. These intervals can help increase speed and mileage for faster overall race times. However, there is a sticking point! This ...

Interval training’s stock has soared in recent years. Is it any wonder, when it promises to deliver impressive health and fitness perks in a shorter time frame than other workouts? Sessions can be fun ...

There comes a time in every runner’s life when it’s time to kick things up a notch. That means one thing and one thing only: interval training. There’s a reason loads of runners don’t like intervals.

If you’re in a run/walk training program, going out for a workout isn’t as easy as lacing up a pair of running shoes, connecting your GPS watch, and selecting the “open run” option. You need to track ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Sprint interval ...

"I'm just not a runner." As a long-distance runner and marathoner with over 20 years of experience, I hear this all the time from beginners who assume running is a gift — you either have it or you don ...