Being anorexic isn't that great in short bursts. I was for a while and lost 60 pounds in 2 months - but when I stopped most of it came back. It's better to just go to the gym everyday and eat a moderate diet. It's quite a bit slower but the weight stays off and you become healthier.
Just gonna comment on this because it seems that people don't understand this, especially guys. It pisses me off when people call themselves anorexic when they're not, especially because most teenage girls do it for attention.
Starving yourself for short "bursts" or periods of time is not anorexia, it is a crash diet. Most women go on a crash diet or extreme diet once in their life. In fact, most people that seem to be commenting here about anorexic experiences have experienced "crash diets," not this serious eating disorder.
Anorexic people are "anorexic" all the time, and they will continue to be anorexic and keep losing weight their entire life unless they die or go into recovery and manage to succeed in suppressing those urges, which is rare and extremely difficult, and even then the self-hatred and discomfort remains.
Starving yourself and being perfectly fine going back to a "moderate diet" would be impossible for an anorexic.