Core Viewpoint - The article emphasizes the increased risk of venous thrombosis during winter due to lower temperatures, reduced physical activity, and insufficient hydration, particularly affecting middle-aged, elderly, and individuals with pre-existing conditions [1] Group 1: Health Risks - The risk of blood clots rises in winter as people engage in less physical activity and drink less water, leading to decreased blood volume and increased blood viscosity [1] - Venous thrombosis is not solely an elderly issue, with clinical cases reported among middle-aged and even younger patients [1] Group 2: Preventive Measures - Simple leg exercises such as leg extensions, kicking, toe raises, and squats can be performed after sitting for about an hour to promote blood circulation [1] - Individuals with poor lower limb venous function or varicose veins are advised to wear compression stockings for physical protection [1]