Studies show that a new way of stretching (dynamic stretching)
increases power, flexibility and range of motion, and may reduce
injuries while the kind of stretching routine most of us have been doing since we were
in grade school (holding a stretch for 20 or 30 seconds, supposedly to
prepare muscles for exercise, or static stretching) not only fails to
do what it is supposed to do but may actually weaken muscles and hurt athletic performance.