Diet pills. sometimes some yogurt. if you starve yourself your body goes into starvation mode. it begins by eating your muscles away til they're gone. the second you start eating again, it latches onto the energy and stores it improperly causing you to gain weight, maybe even more than before you lost weight. Anorexia is a terrible, terrible way to lose weight. there are much much much much healthier ways. Do not aim for skinny and unhealthy, aim for fit. try to be toned, not itty bitty twig. if you are working out and building muscle (low weight high reps, strong, long, and lean muscles, very attractive) you need to eat protein at every meal. One third of your diet should be carbs, and no more. once you reach your target, a little less than half of your diet should be carbs for healthy food intake. eat a banana for dessert instead of cake, it helps your muscles.
I have a Goddaughter that has Anorexia and the one thing I have noticed is Anorexics often love to cook for others, but seldom eat what they cook. She sticks to more fruits, veggies, salads, no protein, waters down her orange juice and spreads her food on her plate to make it look like more.