I did see a definite difference after 2 weeks of doing this. HOWEVER, I will say you can't rely on tea to make you fit. For me, it was more of a guide for a healthier lifestyle. The night time tea was probably a bit part of the tummy flattening considering it is said that we carry excess weight in are intestines, so that helped flush it out. Again, you can't count on tea to make you lose weight, but it is a nice guide to get in to the routine of a healthier way of living.