Actually, there is no need to be so harsh. Usually, black rice has a good kidney-tonifying effect, and it is also suitable for eating from 5 pm to 7 pm, because this time period 12 is the seasonal time of kidney meridian from the perspective of health preservation, and winter is also a good season to eat black food. If it is kidney qi deficiency, it is easy to have backache and leg weakness. , is also the first choice. If it is simply used for health preservation, in fact, as long as you eat on time and are not picky about food, most of the food you eat is good, as long as it is not.