Yes, but usually once every seven days and then once every 1-2 days. You can eat what you want in the interval, and drink soup in strict accordance with the requirements at other times.

7-day slimming soup can really lose weight, but it is a test of will for many people. Too many people simply can't hold on for seven days, or they can't strictly follow the requirements within seven days. As for the rebound, if the normal diet is resumed immediately, it will definitely rebound, but conscious diet control will not rebound.