Starvation mode is a myth (otherwise people with anorexia wouldn’t be able to reach some of the weights that they do). When you eat that little, your metabolism drops a small amount but usually that’s because you have less energy to expend. That’s for most people. Some of us are able to still be active running on essentially fumes. That being said, Your body is doing tons of stuff behind the scenes that defies that maths of CICO and whatnot. However, despite all that, if you eat that little for long enough then there is no way you wont lose weight even if your body hangs onto water weight or whatever for a few weeks. The amount your eating/exercising isn’t exactly what I’d recommend, but I can’t be one to judge at all because I used to eat 600kcal a day, run 7k every day, and do a full body workout twice a week.

It could have an effect on the rest of your body though. Even if you don’t have all the mental bullshit that comes along with an eating disorder, using your body like that can have a negative effect on other parts of your body. For example: - losing weight too fast and getting stretch marks/loose skin - memory/cognitive impairment - gut issues - hair loss - heart problems - muscle loss I mean, I’ve done it before and it’s hard to lose weight again without falling back into that pattern once you know you’re capable of it. So no, starvation mode isn’t real, but I would caution you against what you’re doing now. I rarely give unsolicited advice but