多地再迎“桑拿天”，这份避暑提示请收好→

Core Viewpoint - The ongoing high-temperature weather poses health risks, particularly for vulnerable groups such as the elderly, pregnant women, children, and individuals with chronic illnesses [1][4]. Group 1: Health Risks and Recommendations - The National Disease Control Bureau and the China Meteorological Administration have issued health risk warnings and recommendations during high-temperature alerts, advising the general public to stay indoors and reduce outdoor activities during yellow alerts, while vulnerable groups should avoid going outside during orange alerts [4]. - During red alerts, outdoor workers are advised to manage their work schedules wisely and use heat prevention supplies, seeking medical attention if they experience severe discomfort [4]. Group 2: Outdoor Activity Precautions - Before outdoor activities, individuals should take sun protection and cooling measures, such as using umbrellas, wearing hats, and avoiding clothing that hinders heat dissipation [6]. - It is recommended to hydrate with small amounts of saltwater or sports drinks to replenish lost fluids and electrolytes, especially during intense exercise, with a suggested intake of 250 to 500 milliliters of warm water per hour [6]. Group 3: Travel and Personal Protection - Prior to traveling, individuals should monitor weather changes at their destination and prepare necessary personal protective items and medications, including checking if vaccinations are needed for international travel [8]. - During travel, it is crucial to prevent foodborne illnesses by practicing good hand hygiene, avoiding raw foods, and drinking safe water [8]. Group 4: Understanding Temperature and Humidity - The concept of "feels-like" temperature, which can be significantly higher than the actual air temperature due to humidity, is emphasized, with conditions where the perceived temperature can exceed the actual temperature by 1-7 degrees Celsius [10]. - In high humidity conditions, even temperatures below 30°C can feel excessively hot, leading to discomfort and health risks [10].