I did SW back in 2012, it was the worst thing I did, I managed to lose about 5 stone but I hardly ate anything just to get my next certificate. We had an evening weigh in so I wouldn’t eat all day and constantly weigh myself before going as I needed the next stone or stone and a half award, I would make myself sit under a towel with a hair dryer just to sweat it out, it was NUTS - totally agree it causes disordered eating, not allowing certain foods unless it’s counted for etc