High-intensity interval training is important, but coming back to your breath can be crucial to helping you train.

Ever wish you could breathe easier and sustain more intensity mid-workout? You may have overheard the term "VO2 max" at the gym or on a trainer’s social media page recently—but what is this fitness ...

I’ve done enough “real” VO2 max tests—the trips to the lab, the expensive and cumbersome equipment, the brutally exhausting treadmill protocol, and in one case, the puking in the corner ...

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? Ever wish you could breathe easier and sustain more intensity mid-workout? You ...