In zone 1, you’re warming up for a run, and in zone 5, you’re at an all-out sprint. Recently, zone 2 has gained MVP status among the five zones, thanks in part to longevity gurus like Peter ...

Zone 2 cardio training may be a lower-intensity sesh, but it comes with major benefits for your health and performance. Here’s what to know about the workout style and how to add it to your routine.

Zone 2 running means staying within that second of five heart rate zones, which equals about 60 to 70 percent of your maximum heart rate. It’s the zone in which you can have a conversation, but ...