Simple Trick: Keep Your Water Cold All Day Without a Thermos

As summer approaches, many seek innovative ways to stay hydrated and cool. A popular life hack circulating online offers a simple solution for keeping water cold without the need for a traditional thermos. The method involves partially freezing a plastic water bottle. Users are advised to fill a bottle halfway with water and place it in the freezer horizontally until the water is completely solid. Once frozen, the remaining half of the bottle can be filled with fresh water. This creates a self-cooling system, as the ice gradually melts, keeping the water chilled for an extended period. This practical tip is ideal for those heading to the gym, embarking on a hike, or simply needing a refreshing cold drink on a hot day.