Ultrarunner tries to break Appalachian Trail record
June 30, 2015, 9:37 a.m. by Jenn Savedge
Scott Jurek is running about 50 miles a day, hoping to complete the AT in 42 days.
How to stay cool when you're exercising in the heat
May 30, 2015, 2:23 p.m. by Jenn Savedge
Researchers test different pre-cooling methods, including drinking slushies or donning ice-filled undies, to find out which one helps handle the heat.
Michelle Obama shows off her hardcore fitness routine
May 20, 2015, 12:04 p.m. by Jenn Savedge
The first lady responds to the president's challenge by showing him how it's done in #GimmeFive video.
Exercise app 'Zombies, Run!' now free for the living
May 15, 2015, 12:15 p.m. by Michael d'Estries
Just in time for the apocalypse, one of the best running apps for your smartphone is now free-to-play.
Treadmills linked with 3 fatalities yearly
May 6, 2015, 10:37 a.m. by Rachael Rettner, LiveScience
Becoming familiar with any piece of equipment is the first step in exercise safety.
Jake Gyllenhaal's grueling physical transformation for 'Southpaw'
April 23, 2015, 5:28 p.m. by Michael d'Estries
Actor, who previously shed 30 pounds for his role in 'Nightcrawler,' had six months to reinvent his body to portray a professional boxer.