This brief report warns against certain beverages during hot weather. The original Polish headline translates to "You won't hydrate with this. Avoid like the plague on a hot day." While the text itself is extremely concise, the implication is that commonly consumed drinks may actually *detract* from hydration efforts during a heatwave. It suggests choosing options beyond typical sugary drinks or those with diuretic effects. Further details regarding specifically which beverages to avoid are absent in the provided text, but the message is clear: not all drinks are created equal when it comes to staying hydrated. Consumers should be mindful of their choices to prevent dehydration and heat-related illness. The report underscores the importance of proper hydration during periods of high temperatures.