Megan Fox admitted to using a vinegar-based cleansing treatment to lose weight quick. The actress explained,

It just cleanses out your system entirely. It will get rid of, for women who retain water weight from your menstrual cycle and all that, it gets rid of it really fast. I’m not one for dieting or exercising, ’cause I’m lazy and I have a really big sweet tooth, so I have to do cleanses every once in a while ’cause of the amount of sugar I take in.

This doesn’t sound too healthy, but I guess it works for her if she needs to lose weight before an event.