Marcel Moyse has become one of the legendary great flautists of the 20th century. As a pupil of Tannanel and successor to Gaubert at the Conservatoire National de Paris, he stands in the direct tradition of the 'French School'. How I Stayed in Shape is his last book of studies (1974), presented here for the first time in a trilingual edition (French, German, English). His pedagogic and artistic experiences are set out in their entirety with the aim of helping professional flute players who have little time to practise, and also 'everyone who loves the flute, while not forgetting the music'. This volume aims to improve the basic aspects of flute playing (formation of tone, intonation, articulation, phrasing) using examples from the repertoire and Moyse's own detailed comments.