This is Your Quick Training Tip, a chance to learn how to work smarter in just a few moments so you can get right to your workout. You’re probably also familiar with rowers, ellipticals, and stair ...

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 ...

Whether you’ve just recently gotten an Apple Watch or have had one for a while and haven’t used cardio fitness, it’s a valuable measurement to understand and use. Here’s how Apple describes it: ...