Group 1 - The current hot season, known as "Da Shu," is a good time for "yang nurturing," with methods like sunbathing being popular [1] - Not everyone is suitable for sunbathing; individuals with weak constitutions, the elderly, and those with skin allergies should avoid it [1][3] - People with underlying health conditions such as hypertension, coronary heart disease, and hyperlipidemia are also advised against sunbathing [1] Group 2 - For individuals with a cold constitution, sunbathing can be beneficial, but precautions must be taken regarding weather, duration, and post-sunbathing care [3] - It is recommended to start with 5-10 minutes of sun exposure, gradually increasing to 15-30 minutes, 2-3 times a week [3] - After sunbathing, individuals should avoid cold showers and air conditioning immediately, allowing the body to cool down naturally [3] Group 3 - During the hot season, outdoor workers like delivery personnel are at high risk of heatstroke [4][6] - Symptoms of heatstroke include headache, dizziness, and excessive sweating; individuals should rest in a cool place and hydrate if these symptoms occur [4] - If symptoms worsen, immediate cooling measures and medical attention are necessary [4] Group 4 - Outdoor workers are advised to take proactive measures such as wearing protective clothing and taking regular breaks in shaded areas [6] - Hydration is crucial; workers should drink water regularly, preferably electrolyte-rich beverages, and avoid ice-cold drinks [6] - Alcoholic and high-sugar drinks should be avoided as they can burden the body [6]

Group 1 - The article emphasizes the importance of health preservation and disease prevention during the hot summer season, highlighting various expert recommendations for public health [1][10] - Experts from the National Health Commission provided insights on topics such as sun exposure, liver health, heat prevention, and mosquito bites, offering practical health tips for the public [1][10] Group 2 - Sun exposure, referred to as "伏天晒背," is recommended for individuals with a cold constitution, but precautions are necessary for those with certain health conditions [2] - Liver health can be maintained through symptom-based traditional Chinese medicine recommendations, and lifestyle changes are crucial for liver protection [3] - Outdoor workers are advised to take proactive measures against heatstroke, including wearing protective clothing, taking breaks, and staying hydrated [7] - The article warns about the recent outbreaks of Chikungunya fever and provides preventive measures against mosquito bites [8] - It also addresses drowning prevention for children and teenagers during summer activities, emphasizing safety measures and parental supervision [9]