"You're going to hurt yourself" is a thing people say when they're watching someone else make progress. She posted one workout selfie — sports bra, absolutely nothing aspirational about the caption, just a time stamp — and her DMs immediately filled with unsolicited advice from people who have never seen the inside of a gym.
She ignored every single one. She is now three dress sizes down from her February baseline and has blocked the word "sustainable" from her search terms. The people calling it "obsessive" are the same ones who texted asking for her routine two weeks later.