Scientists ID New Form of Exercise Scientists Identify Way of Strengthening Muscle Cells Without Lots of ExerciseW A S H I N G T O N, April 10 — It's a couch potato's dream: Instead of sweating and straining, people someday may simply pop a pill to get in shape, say researchers who have identified how muscle cells get stronger from regular exercise.Researchers at Duke University and the University of Texas Southwestern Medical Center have found the chemical pathway that muscle cells use to build up their strength and endurance.With this basic knowledge in hand, it may now be...