I was anorexic for a time.
Two days without eating and the energy boost is amazing. You don’t sleep either.
Then after a time, your hair falls out, your eletrolytes got out of balance, you start fainting.....
I will admit, I will never be a size 3 again. I'll even post my measurements as *gulp* 42-36-42. Yet, I look curvy, rather than fat. I rarely overeat and I keep working on exercise. I have had men I didn't know say I looked good (no, I'm not bragging), so finally have decided I'll just keep active and if I lose, great. So long as I don't blimp up. Of course, my skinny, energetic, eats anything and everything little 6 year old has decided to start his own family health club, so that might work on maintenance.