On Wednesday morning, our fourth in Istanbul, P. and I found ourselves sitting on the floor in a ballet class with teenage boys and girls. The instructor, a short, wiry woman in her forties, demonstrated each step and spoke a few words in Turkish (of which we understood nothing), switched on the music — a piece of Chopin or Tchaikovsky or another modern classical composition — and said “Hazir”. The students, six boys and eight girls, stood on three sides of the rectangular studio holding with one hand the horizontal bar. While they performed, some with more precision and elan than others, the instructor gave verbal cues for the steps to follow. This pattern recurred several times, each with a different sequence, before a break was announced. But this was no real break: the students began stretching exercises, arching and bending their impossibly flexible young bodies.