I will feel very tired on the day when the weather changes. I have to sleep for a long time, and I am still very tired after sleeping. Why is this?

The change of weather is also a process from quantitative change to qualitative change. Generally speaking, the cumulative effect of meteorological factors reaches a peak on the day when the weather changes, which is more common before it rains: the humidity increases, the air pressure decreases, and the excessive change of air pressure will cause adverse reactions, low air pressure and low dissolved oxygen in blood (air pressure will directly affect the dissolved oxygen in human blood, and the higher the air pressure, the stronger the dissolved oxygen capacity), leading to accelerated heart rate, shortness of breath and fatigue and emotion.