For hours on end he would make them perform the exercise: deep knee bends with arms raised and hands behind the head. Even a man in top condition would be in agony within half an hour. Flick had always found it exhilarating to watch the expressions on the prisoners' faces as they felt their bodies begin to betray them, as their joints and muscles cried out in anguish. And the fear in their faces. For those who fell from exhaustion were either shot on the spot or kicked until they resumed the exercise.
