Why water kept near pillow during sleep?

Keeping a glass of water near your pillow during sleep serves several purposes. It provides easy access to hydration if you wake up feeling thirsty, which can help prevent dehydration. Additionally, having water nearby can be comforting and promote better sleep by alleviating concerns about needing to get up for a drink. Finally, it can also help soothe a dry throat or mouth, especially in dry environments.