Lack of time is often the main reason people don't exercise regularly. But a type of interval workout recently popularized by ...

RUNNERS CAN EASILY fall into a basic routine for their workouts: Lace up, hit the pavement, then cruise at a comfortable pace for as many miles as planned. This might feel good, but it’s not always ...

High-Intensity Interval Training (HIIT) has become one of the most effective fitness strategies in the United States for ...

Interval walking alternates slow and fast paces to boost intensity. People of all fitness levels can benefit from interval walking. Gradually increase the frequency and intensity of your interval ...

New research shows the 4x4 workout format can improve fitness faster than traditional workouts, such as jogging or cycling ...

Step into a healthier future, stride by stride. The varied paces in interval walking enhance your body’s ability to deliver oxygen to muscles. “Adding higher-intensity intervals pushes your ...

HIIT exercise isn't for everyone and there's some evidence that you can overdo it. Here's what the experts recommend ...

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 ...

In individuals with insulin resistance, short bursts of intense exercise may be an effective alternative to a prolonged bout of continuous, moderate exercise for improving glycemic control, according ...