You don’t build a stronger heart by punishing it. You build it by challenging it wisely. Somewhere between couch life and ...

Sticking to new habits isn't easy in the new year, especially when they mean giving up old ones that make you feel good—at least temporarily—like hitting up the drive-thru (even if you get the ...

Hilary Hoffman built her fitness business from a side hustle based on her experience finding the right workouts to balance with her busy finance career.Courtesy of Hilary Hoffman/SotoMethod Finding ...

They make it look so easy, don’t they? Endurance athletes such as ultramarathoners (runners tackling anything 50 km, aka 31 miles, and above) seem to sail smoothly beyond limitations of flesh and bone ...

Many runners find pushing themselves in training and racing as one great source of enjoyment for the hobby, which is why once a month in our Runner’s World+ member newsletter we describe a quality ...

For many, the Memorial Day Murph, done in honor of Medal of Honor recipient Navy SEAL Michael Murphy each year, is tough enough. Doing a mile run, 100 pull-ups, 200 pushups, 300 squats and another ...

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. I’ve tried a lot of ...