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 ...

National guidelines recommend adults get at least 150 minutes of moderate-intensity or 75 minutes of vigorous aerobic (cardio ...

Runners, you've gotta lift. And lifters, sets of 10 do not count as cardio.

Official recommendations vs. your goals.

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 ...

High intensity interval training (HIIT) may be the most effective form of exercise for reducing body fat while maintaining ...

It can be a challenge to figure out where to start when you want to lose weight. But if you’ve recently started on a path to lose weight safely yet efficiently, doing cardio for weight loss is key.

America has an obesity problem. The National Institutes of Health estimates that two in five adults are overweight and one out of every three adults are obese. Though a healthy diet has the biggest ...

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 ...