Low-intensity training is great for you, no matter what your fitness-tracking gadget says.

Noticeable changes in heart rate, like a 6 to 10 percent drift, also signal aerobic decoupling, says Norris. For example, if ...

Slow running has been emerging as an unexpected way to run faster over long distances. Easy, conversational-pace runs can ...

This article was reviewed by Craig Primack, MD, FACP, FAAP, FOMA. Zone 2 training is a type of cardio exercise where you use your heart rate as a guide to help you find the right intensity for your ...

MARTIN: Did you get a workout in this weekend? How'd it go? MARTÍNEZ: I got two. One was an easy one, and the second one was I put myself through the ringer. MARTIN: (Laughter) Excruciating. OK.

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images A half marathon is just a 5km warm-up, a 10k run, and a 5k recovery run, ...

If you're a lifelong powerlifter or bodybuilder, there's a good chance you're more concerned about growing your glutes, carving your core, or building your biceps than boosting your VO2 max. But for ...

A half marathon is just a 5km warm-up, a 10k run, and a 5k recovery run, right? Yes, it’s that easy—especially when you tap into Zone 2 training. With 6 full marathons and over 20 half marathons under ...