Learn more about this metric and the best training sessions to add to your schedule to boost your cardio fitness.

Count on better recovery and faster times when you master this training tactic.

Combining Zone 2 running, goal pace running and sprinting in your weekly training plan can be ideal for developing aerobic endurance, pacing skills and explosive speed.

Runners, attention: if you've never tried a pair of Brooks running shoes, you're missing out. Travel writer Erin Deborah Waks tests out the Brooks Glycerin 23 trainers.

Apple, Garmin, Samsung, Google or Amazfit? I compared each one against a chest strap for heart rate accuracy and found a ...

I wore the new Unrestricted Power collection at an intense workout session—and then afterwards, too.

Runners can easily fall into a basic routine for their workouts: Lace up, hit the pavement, then cruise at a comfortable pace for as many miles as planned. This might feel good, but it’s not always ...

Coach Tom Miller and speedskater Olivia Alsdorf say speed skaters are made off the ice ...

Regan Dewhirst travels the world as the physical therapist to alpine ski racing star Mikaela Shiffrin, who is competing at ...

Does your idea of a perfect run involve a pastel sky and a Fleetwood Mac–infused playlist? Or are you all business, crushing Strava segments and taking no prisoners at Parkrun? Either way, if you're ...