Juice fasting is when a person consumes only juice for a set period. It is a form of crash diet, or “fad diet,” that promises dramatic weight loss in a short space of time.

WJZ found some Baltimoreans who said a juice fast worked for them. "It was a 10-day juice cleanse, a green juice cleanse, that was online," one man told us. "Me and my ex did it at the same time.