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 ...

When it comes to exercise, most people think of popular cardio activities such as running, swimming or cycling. While each of these are great ways of getting your heart rate up, toning your muscles ...

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 ...

A new year is the perfect time to focus on your most important muscle — your heart. Experts say consistent movement and ...

Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...

'The key with HIIT is to exercise at a high enough intensity to influence the push of your heart, and the stretch of your blood vessels. True high-intensity intervals are three minutes or less, and ...

Zone 2 training is cardio done at a steady, low intensity. It has benefits for aerobic training (so you can run faster), anaerobic training (helping you to recover faster between reps and sets, or ...

Ask anyone about the most convenient cardio option that comes with no hefty gym membership, costly workout gear, or any other pricey baggage — and they’ll write you an essay on running. It’s the most ...

You’ve probably heard that regular exercise—whether you’re walking, jogging, riding a bike, or hopping on an elliptical—can help protect your heart. But what about if you already have a cardiovascular ...

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 ...