Running on a treadmill or outside offers similar fitness benefits—learn which feels harder, when to choose each, and how 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. Is the treadmill ...

Ask a group of runners whether they’d rather run on a treadmill or outside, and you’ll probably get some very strong opinions. Some can’t stand the boredom of indoor miles, while others love the ...

Navigating outdoor running during the winter months is a tough task. Frigid temperatures, dangerous road conditions, and the lack of daylight before and after work make it nearly impossible to put in ...