Core Viewpoint - The article discusses the health implications of consuming cold foods like ice cream during hot weather, highlighting a phenomenon known as "brain freeze" or "ice cream headache" that can occur after eating cold treats [1][10]. Group 1: Health Effects of Cold Foods - Consuming cold drinks can stimulate the parasympathetic nervous system, reduce autonomic nervous system disorders, and enhance digestion by promoting gastrointestinal motility and increasing appetite [7]. - "Brain freeze" is characterized by intense pain in the forehead and temples, lasting from a few seconds to a maximum of 2-5 minutes, and may be accompanied by nausea and vomiting [10]. - The condition can occur after consuming cold foods in two scenarios: eating cold treats quickly or drinking cold beverages after intense physical activity, which can irritate cranial blood vessels [12]. Group 2: Recommendations for Consuming Cold Foods - It is advised to consume cold drinks during midday when the body's yang energy is strongest, ideally after meals rather than on an empty stomach [15][17]. - When consuming cold foods, it is recommended to take small amounts, allowing them to warm in the mouth for 3-5 seconds before swallowing, and to avoid excessive consumption in a short period [17]. - Individuals with a history of migraines or children with underdeveloped temperature regulation should be cautious with cold food consumption [17].

Core Viewpoint - The article emphasizes the increased cardiovascular risks during summer due to high temperatures and suggests various protective measures for heart health. Group 1: Summer Heart Risks - Cardiovascular disease-related mortality increases by 2.1% for every 1°C rise in temperature [1] - Heart attack cases surge during summer, particularly after the hottest days, due to three main pressures: temperature extremes, cold food consumption, and emotional stress [1][2][3] Group 2: Recommendations to Avoid Heart Risks - Avoid drinking ice water immediately after exercise to prevent sudden blood vessel constriction and increased blood pressure [4] - Do not blow air conditioning directly on oneself after sweating; allow the body to adjust gradually [5] - Wait 10-15 minutes after sweating before taking a cold shower to prevent blood vessel spasms [6] - Limit sugary drinks; consuming more than two servings daily increases cardiovascular disease risk by approximately 21% [7] Group 3: Heart Health Practices - Drink warm water before bed and upon waking to dilute blood and reduce clotting risk [9] - Drink small amounts of water frequently rather than large quantities at once to avoid overloading the heart [10] - Incorporate fresh fruits and vegetables into the diet to ensure adequate potassium intake and support heart health [11] - Take short naps during the day to alleviate fatigue and support heart health [12] - Engage in brisk walking for at least 30 minutes daily to lower the risk of heart disease and stroke [13]