Robin Sharma, the self-help guru and author of The 5 a.m. Club, is up—“4 a.m. is the new 5 a.m.” he told GQ recently—for a ...

This approach links to the idea that you should use a variety of types of run to improve your performance, rather than ...

Let’s be honest: not all exercises were created equal. Some moves have earned a permanent spot in our workouts without actually pulling their weight. To help you swerve wasted time and zero gains, ...