Get the blood flowing and muscles firing with these six warm-up stretches for runners to prevent injury and feel your best.

A new wave of research is showing what the old gym myths about stretching got wrong—and what you really need to do to reap its benefits.

Proprioceptive neuromuscular facilitation (PNF) is a form of assisted stretching. It combines passive stretching with muscle contraction. First, your partner applies force to stretch your muscle ...