Sadly, there are quite a lot of Ashtanga practitioners who become extremely obsessed with staying lean and light for the sake of their practice.
Eating disorders stemming from false assumptions and chasing unrealistic ideals are a big problem in our society. Yoga practice should not lead to those but shield us against them. Sadly, there are quite a lot of Ashtanga practitioners who become extremely obsessed with staying lean and light for the sake of their practice. I have met people who fast for days on end or just drink juices while practicing advanced asana. This is far from what the ancient texts and any reasonable teacher would prescribe. It is irresponsible and dangerous. Unless we aspire to become renunciates, this kind of behaviour not only is unnecessary but can also create serious health issues.