With the onset of changes in the environment and the transition from the winter season to the spring season, changes are also observed in the physical condition of people. Spring fatigue is a state of low energy or negative emotion associated with the onset of spring. This reaction of the human body can be normal, as a result of rising temperatures, or it can appear as a result of an allergy or seasonal affective disorder. Women are more commonly affected due to menstrual cycles and hormonal changes, and in some cases it is due to low iron levels. During the winter months, the body temperature normally drops, and the lack of light makes us lead a more passive lifestyle. When the ambient temperatures rise, the body temperature also rises slightly. In addition, the ongoing metabolic processes as well as the levels of various hormones adjust to the respective light conditions. Blood pressure values ??also change due to expansion of blood vessels, which leads to its lowering. These processes are the cause of the low energy of many people in the spring. According to a number of studies, one in two adults are affected by spring fatigue at the transition of seasons and need some time to regain their normal energy levels. In order to avoid or reduce the severity of spring fatigue, it is recommended to spend enough time sleeping during this period. Sleep is beneficial for faster adaptability to the hormonal changes that occur. As daylight hours increase, the body again produces more serotonin, which, in turn, reduces melatonin production. Melatonin is a hormone that stimulates the transition from wakefulness to sleep. It is also called the “sleep hormone”. Training in the early hours is also beneficial for spring fatigue. Physical activity for greater endurance, such as running or cycling, stimulates blood circulation and thus reduces fatigue. At least 30 minutes of physical activity per day is recommended. Another very important stage in dealing with spring fatigue is the optimal diet. During the warmer months, good hydration is recommended, that is, intake of sufficient amount of water, as well as consumption of lighter foods, such as seasonal fruits and vegetables. A balanced diet in every season provides the vitamins, nutrients and minerals needed by the body and ensures the optimal health of people. References: https://www.css.ch/en/private-customers/my-health/physical-health/amazing-human-body/spring-fatigue.html