Do you even know what HIIT stands for? We have the answer to that—and more.

From machines to at-home HIIT, these workouts maximize calorie burn to help you lose weight and keep it off. Efficient, high-intensity, varied cardio burns more fat than steady-state, low-intensity ...

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.

Cardio exercises have major benefits for your heart, as you probably know. What's more, aerobic exercise can boost your brain health and can even reduce the risk of death. Running is the workout most ...

Lots of ways exist to get a full-body workout with little to no equipment. The one below only requires a place to run and a ...

When you enter the gym, which way should you head first? Toward the treadmills and spin studio to get your sweat on with a cardio session? Or toward the free weights and strength-training machines to ...

The cardio craze has ebbed and flowed for decades. At various points in time, it’s felt like everyone is obsessed with cardio-based workouts—and doing a lot of them—from step aerobics in the ’80s to ...

If running is difficult, you can still boost your heart health with a short, high-intensity workout featuring simple moves ...

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 ...