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 ...

The more you work out, the fitter you'll get. Your VO2max, sometimes described on wearables as a "cardio fitness" score, is a number that tends to be higher among people who are more cardiovascularly ...

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 ...

Maximise heart health, longevity and fitness in every decade ...

The goal isn't just to exercise harder, but to be less sedentary everywhere else.

This is read by an automated voice. Please report any issues or inconsistencies here. If your smartwatch has ever flashed a “VO₂ max” score or you’ve heard ...

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"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." If your weekly schedule looks like a jigsaw puzzle, squeezing in both cardio and strength training can be ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. January 12, 2026 Add ...