4. Suppleness of the muscles. A tightrope dancer stretches and bends his pupil’s joints as often as possible so that they become soft. Initially, it is by force that a dancing master compels the muscles to hold the foot out straight. Natural habit follows on from practised flexure. Similarly, the Lapps are always flexing the muscles intended for walking: they even sit with their legs crossed in a way that others cannot do for long without strain and discomfort. We do like to sit comfortably. At first I found it difficult, now it is comfortable, and now I really can walk 4 times as far as before.