Why “21” Is The Magic Number Behind A Bigger Chest

Why “21” Is The Magic Number Behind A Bigger Chest

Or any other muscle, for that matter The ‘21s’ method is a muscle-building technique that has stood the test of time—but you rarely see it applied to anything other than biceps curls. The concept is simple: During a set of 21 reps, you’ll progress through three...
BUSTED: Does Hill Training Actually Work?

BUSTED: Does Hill Training Actually Work?

Serious runners swear by hill training. But a new South Dakota State University study finds that running intervals on flat terrain may be more effective than hill repeats for improving your distance running. When athletes performed intervals on either level ground or...