We’ve reached the time of year where many runners start to move their workouts indoors thanks to unfavorable weather conditions outside. This is when the treadmill comes in handy for checking off ...

If you like the variety you get from a tempo run, interval workout, or fartlek then you’ll love practicing this ladder workout, crafted by Noam Tamir, C.S.C.S., founder and CEO of TS Fitness in New ...

The truth about the app that helped Hilary Duff get so toned.

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. Cardio is good for us, ...