"Relaxing can be very stressful for a lot of people. When they got off the treadmill of life their immune system collapses. Sometimes that is the only way they can relax. But leisure time can also be stressful because it means the day is unstructured, people have to re-establish relationships and spend time with their families."
Those most afflicted by this syndrome are those with a heavy workload or a high sense of responsibility. Another reason to repent, quit your job and slack off? (via FmH)