Probably not. But that’s no reason to ignore your local juice bar’s punny sandwich board.
“There are a lot of juice cleanses with a high amount of nutrition,” says personal trainer Kathleen Trotter. The issue isn’t the juice — it’s the cleanse. “There are better ways for people to learn new nutritional habits. People think, ‘I’m going to go on this cleanse, lose 10 pounds, and be this whole new person.’ But once they finish, they’re frickin’ starving, so they go out and binge on food. Most of the weight you lose from a cleanse is muscle, not fat. And when you gain it back, it’s fat, not muscle.”