Slim down: to become thinner, for example as a result of eating less (靠节食等)变苗条,减肥
She slimmed down to 60 kilos before her wedding.
她在婚礼前把体重减到了 60 公斤.
pig out (on sth) :to eat too much food 大吃;猛吃
They pigged out on pizza.
他们猛抢着吃比萨饼.
Miracle diet:神奇减肥食谱
Health club:健身俱乐部