I don't know if anyone will see this but I need to get it out. There was an obese lady in zumba asking the fit instructor if she should drink protein shakes to lose weight. Thin instructor immediately starts talking about starvation mode, making sure to eat enough and keeping your metabolism stoked. I said that's not a thing and I lost 50 pounds by counting calories, that I still eat junk whenever I want I just count it and it's just math. Instructor gives anecdotal evidence about how she gains weight if she doesn't eat enough. I said that's because you're overeating later. Obese lady counters that she doesn't want to starve and she can't do math and won't count what she eats. I told her to write it down for a few days and get into a schedule. I noped out of the conversation after that but the instructor, who has likely been thin all her life, was pissed at me for contradicting her. Who tells a person who needs to lose over a hundred pounds that they need to make sure to eat enough?! That is obviously not their issue.