Is the treadmill harder or easier than running outdoors? Survey runners, and you’ll get plenty of different opinions on which feels harder or easier, but the basic physics of running are the same on ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Seth Berkman Seth Berkman is a fitness writer. He incorporates testing into ...

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 ...

Amelia MacIntyre, DO, is a board-certified family medicine physician. She is certified in osteopathic medicine. Treadmill and outdoor running deliver similar fitness benefits for most runners—miles ...

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 ...