For Matthew Paczko, stiffness and limited mobility in his 40s pushed him to look for relief. He found it through Stretch Zone, a studio offering one-on-one practitioner-assisted stretching. Doctors are warning that "sitting is the new smoking," as Americans spend more time sedentary at work, in the car, and at home. Now, a growing number of people are turning to assisted stretching to help. "Getting on a schedule and continuing the stretching is when you see the most benefits.