1. Losing fat can't be mobilized in three or two days, but hunger and exercise are ok. But even so, the possibility of mobilizing fat is not high, and it is generally to decompose liver glycogen and muscle glycogen. It's over. What did you say? Eat ~ If the fat metabolism is too strong, such as fasting and strenuous exercise, it will lead to metabolic acidosis. In addition, the kidney does not metabolize fat directly, so it is necessary to decompose the liver first. The principle of this thing to make brown urine may be that it contains any ingredients that can turn this color in the urine stage (such as artificial pigment). I was shocked when I ate the snack containing this pigment.

2. Looking at the publicity photos, the man lost a lot of weight in a few days, and his face changed from colorful to dull, from normal to grayish yellow, obviously because of hunger. Selling goods is also a fight ~

It's nothing to lose weight overnight. Any diet without exercise+unreasonable diet+other packages are hooligans. Long-term low nutritional status will affect your bones ~ because: fat is really difficult to mobilize.