When Kristin Cavallari says she’s never looked or felt better, you pay attention. The secret behind her transformation? Nashville-based trainer Kevin Klug, who’s revolutionizing fitness with his elite ...

Training to the point where you have nothing left in the tank may not always be the best way to encourage tissue to repair, ...

Feeling constantly tired, gaining weight despite a consistent diet, or experiencing mood swings could indicate a sluggish ...

Use precise geolocation data. Actively scan device characteristics for identification. Store and/or access information on a ...