Why it matters
Water supports almost everything your body does, and many people simply forget to drink until they feel thirsty. A habit removes the guesswork. Instead of relying on memory, you build small cues into your day.
Research on habit formation suggests that linking a new behaviour to something you already do, like a meal or a coffee break, makes it far easier to repeat. Water is a great first habit because each glass is small, quick and easy to count.
How much you need depends on your body, climate and activity level. There is no single right number. If you have a health condition that affects fluid intake, check with a doctor before setting a target.