Group 1 - The article emphasizes the importance of food safety during high temperatures, particularly regarding the consumption of cut fruits and leftover meals [1][11] - Cut watermelon should ideally be consumed fresh, and if stored, it should be wrapped and refrigerated, with a maximum storage time of 48 hours to prevent bacterial growth [1][3] - Leftover food, especially certain types like leafy greens and seafood, should be avoided due to the risk of spoilage and potential health hazards [4][8] Group 2 - Leafy vegetables can lose nutrients and become unsafe if stored improperly, as they may convert nitrates into harmful nitrites [6] - High-protein seafood can produce degradation products if not consumed on the same day, potentially causing gastrointestinal discomfort [8] - Starchy foods like potatoes should be sealed and frozen if not consumed immediately, to minimize bacterial growth [10] Group 3 - Recommendations for summer eating include preparing only what can be consumed in one sitting and ensuring any leftovers are properly stored and reheated before consumption [11][13] - The article outlines a "three do's and three don'ts" approach for summer food safety, emphasizing cooking food thoroughly, separating raw and cooked items, and avoiding the consumption of raw water and unwashed produce [13]

Group 1 - The article discusses the risks associated with the so-called "smart drugs" that are often promoted to enhance academic performance, particularly during exam seasons [1][6] - "Smart drugs" include substances like methylphenidate, modafinil, and Adderall, which are controlled substances with high potential for addiction and significant side effects [3][4] - The misuse of these drugs can lead to severe mental health issues, including irritability, insomnia, and even hallucinations, and they do not actually improve intelligence [6] Group 2 - The article emphasizes the importance of nutrition for brain health, suggesting that certain foods can support cognitive function without the risks associated with "smart drugs" [7] - Six recommended foods for brain health include seafood rich in DHA, nuts high in unsaturated fatty acids, eggs containing lecithin, leafy greens, whole grains, and probiotics [8][10][12][14] - These foods provide essential nutrients that contribute to brain health and cognitive function, highlighting a natural approach to enhancing mental performance [8][10][12][14]