Plenty of research touts the importance of cardiorespiratory fitness (CRF)—also known as cardio fitness, cardiovascular endurance, and aerobic fitness—as a health marker, as well as an athletic ...

VO2 max is a buzzy measure of heart health and fitness. I tried a class that promised to boost my VO2 max through cardio and breathwork. I don't typically do cardio, and I realized taking classes ...

Fitbit's cardio load feature was confusing and some users called it dangerous. A change in the new Fitbit app tracks it weekly, with better results.

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 ...

Running while overweight is hard and can take a toll on a person’s feet, knees, shins, lower back and hips. Here is this week’s question: Stew, what is your advice for heavier athletes running for ...

Cardio is good for us. We need both cardio and strength training for basic health, as well as our athletic goals. But what actually counts as cardio? Can you count walking? Lifting weights? Anything ...

"In theory, doing weights first would put your body into aerobic mode [so] by the time you to get to running, you will already be in aerobic/fat burning state. So you may maintain [that aerobic state] ...

We may earn commission from links on this page, but we only recommend products we love. Promise. Let's be real: Sometimes you just don't have the energy to bang out a full workout, whether it's a five ...

After years of hyping super intense workouts as the best way to exercise, fitfluencers have recently flipped the script. Now, they’re touting easier, chiller zone 2 training as the key to everything ...