Whenever it is cold, we are always willing to experience every languor in this winter time, which seems to belong to winter. We don’t like to be active, we lack interest in social interactions, but we have an uncontrollable craving for food – overeating, especially for carbohydrates and fats like rice, fruits, beef and lamb. The result is obvious: weight gain and longer sleeping hours. In fact, this is a disease that we call “winter depression”, which is also called “seasonal mood disorder”. People’s sleeping and eating patterns change in the cold winter, so we naturally associate it with hibernating creatures. If we think of ourselves as a mammal with its fur shed, it seems we need to rely on hibernation to store up energy. However, we have moved into buildings, we enjoy artificial heating, light and crops, so why do we still enjoy the winter laziness like this? With the arrival of different seasons, our body reacts differently, and all of this is controlled by a very primitive and primary center in the brain. And this center is shaped like a walnut, we call it the hypothalamus. In the dark corners of our brain, the hypothalamus is constantly working to keep our “body factory” alive – regulating body temperature, metabolism, hunger and thirst – keeping Our internal biological clock is kept running normally. The hypothalamus keeps our brain aware of the passage of time each day, and it needs to keep track of daylight changes to keep humans aware of the years. We live in daylight for nine hours of the day and spend the remaining 15 hours in darkness. The hypothalamus is always tuning in, and it’s a high-force modulation – affecting physical performance, mood and appetite by altering the neurochemicals in our bodies. Humans have two sides, both an acquired rational life and a biological nature that has been adhered to for millions of years. And this perfect harmony and blend of tradition and fashion is thanks to the hypothalamus. Acquired rationality needs to fight against biological nature, and we need to get rid of winter depression. So, what can we do to fight our brain? If seasonal depression has affected your life, then go see a doctor. It sounds kind of funny, but it’s the first thing to do. There is another approach we can try – light therapy. Light therapy is a method of treating clinical depression through moderate lighting. This method is an adjunctive treatment, but it has been proven to be effective. You will get some help if you change some habits: When faced with carbohydrates that overwhelm you, be sure to first relax and restrain your inflated desires. Get out of bed. Warn yourself to sleep less. Human biology behaves similarly to other mammals in its desire to hibernate, but be sure to fight that desire. “Hibernating like a bear” is truly a magical thing. Get out there, get moving, stay active. In fact, we have found that people in high cold regions are significantly less likely to suffer from seasonal depression than other people at the same latitude. This may be partly attributable to genetic inheritance, but this happiness also comes from a traditional lifestyle, rich in outdoor activities and culture. If we give up our self-drive trips and holiday feasts, it’s not actually against our holiday spirit. In fact, it’s good for your health when you get together with friends and rejoice.