This exercise will engage, activate, stabilize and strengthen the muscles behind you.
The Olympian moves on to his next (and surprisingly non-running related) venture.
Chris Kimbrough breaks the first women's beer mile world record in 17 years.
The two-time Olympian describes his experience qualifying for a second Olympic team.
Mary Cain wins women's 1500m final for second-straight year.
The outspoken athlete and activist ran and wrote all winter, and will release his first book about his life in track and field this summer.
See what some of the best athletes from the track, roads and trail want to accomplish this year.
The world championships silver medalist wants to break Johnny Gray's American record.
Take a look back at the exciting 2013 season and see who we named the top runners of the year.