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 ...

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 ...

Experts detail the best workout for fat loss, heart health and longevity between strength training and cardio, and how to combine both for maximum results. New research suggests strength training can ...

Sarah is a registered dietitian and freelance writer passionate about connecting people to information that will help them improve their mental and physical health. She’s a big believer that food is ...

You don’t have to strain your knees by running miles to get your cardio in. In fact, if you’re looking to ease into fitness in a way that puts less pressure on your joints, then low-impact cardio ...

If you’re looking to get all of the benefits of a heart-pumping exercise without added stress on joints, consider incorporating low-impact cardio into your routine. “The benefits of low-impact cardio ...

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 ...

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 ...