We all know about seasonal virus fever or allergies. These diseases occur due to the influence of temperature and humidity with the change of seasons. As a result we get mild fever and cold. But getting tired is not a side effect. Behind this is the contribution of sunlight. As the seasons change, so does the intensity and duration of sunlight. It affects our body. Our bodies have separate clocks for winter and summer , which vary based on this sunlight. A nerve goes straight from our eyes to the brain which is affected by sunlight. The most important thing is the morning sun. This morning light helps to keep us awake and at the same time keeps us awake all day long. The sooner the sun rises in the morning, the sooner our body wakes up. When the sun rises late, our body also wakes up late. For example , you wake up at 8:30 in the morning in summer. If you go to bed at the same time in winter, it will not be easy. Will continue to get some sleep. Not only that , because of the low intensity of sunlight in winter and not wanting to work in the middle of winter, we get sleep all day long. However, this problem does not last long. The only problem is the change of seasons. Within a few weeks our body becomes accustomed to this change. Winter is coming soon. Then you don't have to worry too much about this problem.