Why is it cold in winter and hot in summer? This is because in winter, the altitude angle of the sun is smaller, the sunlight shines obliquely on the earth, the energy density of solar energy reaching the earth is smaller, and the earth receives less energy from the sun, so winter is cold; while in summer, the sun's altitude angle is large, the sun's rays hit the earth almost directly, and the energy density of solar energy reaching the earth is very high. The earth gets more energy from the sun, so it gets warmer. in summer.
Because the earth revolves around the sun in an ellipse, in winter, our earth is closer to the sun; in summer, our earth is further from the sun. Additionally, the human body naturally feels hot in summer. This is linked to aspects of the human physical condition