A pull, a strain, a crampA pull, a strain, a cramp
“For most people will power is a limited resource; if we spend lots of energy controlling our impulses in one area, it becomes harder to control our impulses in others. Or, as the psychologist Roy Baumeister puts it, will power is like a muscle: overuse temporarily exhausts it.” — James Suroweicki, “In Praise of Distraction”