n.磅蛋糕
if you diet too strongly, it won't be long before you're laying prostrate on the couch, Sara Lee poundcake in one hand and a 20 ounce bottle of Mountain Dew in the other. 作者的意思是,如果节食过了头,就会受不了,然后就会躺倒在沙发上,重新大吃大喝起来。从原文来看,没有虚脱的意思,应该是受不了节食的痛苦和美食的诱惑,而恢复原状。