The 90/30 fartlek is one of them: 90 seconds of strong running followed by 30 seconds easy, repeated over several kilometres.

Aerobic exercise, also known as cardio, "involves activities that use large muscle groups rhythmically and continuously, raising the heart and breathing rates," explains Gontang. He says that the word ...

Discover how HIIT workouts can torch fat, boost fitness, and save time! Get the ultimate guide, sample routines, and tips to transform your fitness game. Do you feel like it’s time to change up your ...

The world of fitness can be a confusing place. With contradictory information and seemingly interchangeable terms, it can be ...

Aerobic exercise is cardiovascular conditioning that strengthens both your heart and lungs. The word “aerobic” means “with oxygen,” as this kind of exercise is fueled by the oxygen that you get from ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." As a physical therapist and strength and conditioning specialist, I’m all about finding fitness solutions ...

Anaerobic exercise is similar to aerobic exercise but uses a different form of energy — quickly and immediately. Anaerobic exercises include high-intensity interval training (HIIT), weight lifting, ...

If you’ve been lifting long enough, you’ve likely hit the dreaded plateau—your numbers stall, your motivation tanks, and even thinking about your usual routine feels exhausting. While most lifters try ...