Fat is produced at night: The importance of regular eating habits and the biological clock.

Therefore, when lucky enough to catch a large prey, a vulture will greedily devour it, but will not eat more than necessary. Once satisfied to a certain extent, it will discard the prey and leave immediately. Then, it's the vulture's or fly's turn to enjoy the meal. Only humans and their domesticated pets, livestock, or poultry like chickens become obese due to overeating. As for the common complaint, "How come you eat like a pig!", the pig, often seen as a symbol of gluttony, itself doesn't eat more than 80% full. In other words, only humans reach a state of satiation by overeating.

Wild animals don't get fat because they instinctively know exactly how much food is necessary and sufficient for them. They won't accept excess food or anything their bodies don't need. Humans used to do the same. While we might think that "eating to satisfy our appetite (instinct)" leads to obesity, the truth is that "eating in a way that satisfies our instincts won't make us fat."

Fat is produced at night. For the appetite center to function properly and metabolism to proceed smoothly, a regular eating schedule is essential. Our internal "biological clock" establishes certain rhythms for nerve function, hormone secretion, and enzyme activity. Therefore, changes in body temperature, pulse rate, blood pressure, and blood composition throughout the day also follow certain patterns. Generally, these levels are higher during the day and lower at night, because many organisms are active during the day and rest at night.

A regular, normal lifestyle is very good for health because it aligns with the natural rhythms of the human body, which is part of the Earth's ecosystem. For diurnal organisms, these rhythms begin to rise with sunrise and gradually decline around 3 PM, entering a state of rest. Therefore, it is ideal to maintain a regular diet and physical activity during the day, aligning with the rhythm of sunrise and sunset. However, modern life is different; it's impossible to return to the old ways of working at sunrise and resting at sunset. Therefore, maintaining a regular diet, physical activity, and restful lifestyle is still essential for a healthy lifestyle.

If you live an irregular lifestyle, it's not easy to return to a normal life. Therefore, the ideal state is to eat regularly, exercise regularly, and maintain a balanced lifestyle with adequate rest. However, modern life is very different; it's impossible to go back to the old lifestyle of working at sunrise and resting at sunset. Therefore, the ideal state is still to eat regularly, exercise regularly, and maintain a balanced lifestyle with adequate rest.

If one continues a life of being awake and active at night for an extended period, one can adapt to this rhythm, but whether one can fully adapt is unknown. On the other hand, at night, energy supply decreases, and the body breaks down fat, supplying nutrients that will become energy sources to all cells. Regarding body fat, during the day, fat is broken down for energy, so the function of glucagon is enhanced. At night, insulin is more active to produce glycerol and free fatty acids, which are the building blocks of neutral fats. Therefore, some say, "Fat is produced at night."

In other words, the nutrients consumed during the day are used as energy through activity, but the nutrients ingested at night cannot be effectively utilized and are stored as body fat, leading to obesity and even adult-onset diseases. Therefore, to prevent obesity, it is essential to avoid consuming excessive calories at night. Dinner should ideally be finished two to three hours before bedtime, and should not be too heavy. If dinner is eaten late, it is best to finish two to three hours before bedtime. If it is indeed very late, to avoid burdening the stomach, try to avoid consuming fatty foods.