Comment se transformer en air, maigrir en respirant ?

Picked video by video from Balade Mentale (mixed channel): title plainly names a teaching subject. Channel transcript sample: All three sampled videos lack transcripts, so no substantive teaching content could be verified despite the channel's title-sample verdict of 'whole'.

A 12-minute video from Balade Mentale: “Comment se transformer en air, maigrir en respirant ?”.

Video by Balade Mentale, played through YouTube's embedded player.