Berk

“But he had never seen Myrna in practice...never that close up. He had been impressed and a little frightened by the contrast between seeing ballet on stange, where everyone seemed to either glide or mince effortlessly on the tips of their pointes. and seeing it from less than five feet away, with harsh daylight pouring in the floor-to-ceiling windows and no music- only the choreographer rythmically clapping his hands and yelling harsh criticisms. No praise, only criticisms. Their faces ran with sweat. Their leotards were wet with sweat. The room, as large and airy as it way, stank of sweat. Sleek muscles trembled and fluttered on the nervous edge of exhaustion. Corded tendons stood out like insulated cables. Throbbing veins popped out on foreheads and necks. Except for the choreographer's clapping and angry, hectoring shouts, the only sounds were the thrup-thud of ballet dancers on pointe moving across the floor and harsh, agonized panting for breath. Jack had suddenly realized that these dancers were not just earning a living, they were killing themselves. Most of all he remembered their expressions- all that exhausted concentration, all that pain... but transcending the pain, or at least creeping around its edges, he had seen joy. Joy was unmistakably what that look was, and it scared Jack because it had seemed inexplicable.”
― Stephen King, The Talisman