Over 40? If you can hold a plank this long with perfect form, your core strength is top-tier. See where you stand.

13. "Growing older gracefully means having a keen curiosity about learning things about the world that you didn't know ...

Michael Jordan, Vince Lombardi, Muhammad Ali, John Wooden, and Billie Jean King are among the most cited for their ...

Join our 30-day plank challenge! It's a great opportunity to enhance core muscles, as well as overall body stability and ...