The reason why ancient people can adapt to this dietary pattern of not eating after noon, that is, eating only two meals a day, has no effect on their health, is because the activity efficiency of ancient people is relatively low. Although pay attention to intensive farming methods, men and women are integrated, but the amount of activity is not large, because they are all made at sunrise and rest at sunset. Basically, in ancient summer, the sun didn't come out until around six o'clock in the morning, and food was supplemented at around eight o'clock in the middle, and then food was supplemented at two or three in the afternoon. They go to bed early at night, and basically go to bed as soon as it gets dark, and the time in winter will be shorter, so they don't.
This phenomenon is not suitable for us modern people, because we modern people have been active for too long. It is nearly half longer than the ancients, because in fact, in summer, the ancients got up at six and went to bed at seven in the evening. For us modern people, we get up at six in the morning and go to bed at night 12. For such a long time, if you don't eat dinner, there is a big gap, you can't get effective nutrition and reduce your work efficiency.
There are many laws in ancient times, and some opinions put forward in life are correct, but they do not mean that they are all correct. We should have a process of discrimination, as the saying goes, only by taking the essence and discarding the dross can we truly break through the ancient and modern times and make good use of the wisdom of the ancients without using the dross of the ancients.