What's in the 7-Day Nudge:
Day 1: Why "drink more water" advice never works (and the 90-second trick that does)
Day 2: Habit stacking — pair drinking water with something you already do
Day 3: The dehydration symptoms most people misread as anxiety, hunger, or fatigue
Day 4: Why morning hydration matters more than evening hydration
Day 5: The bottle-on-desk experiment (visible cues + the 7-day rule)
Day 6: What 2L a day actually does to your skin, focus, and energy
Day 7: Make it permanent — the daily ritual that locks the habit in