WaterMinder
Drink enough water without thinking about it.
Most people are mildly dehydrated by mid-afternoon and just feel tired, foggy or hungry.
Why it works
WaterMinder sets your target from your weight, activity and local weather, then reminds you only when you're behind. Log any drink in one tap on iPhone or Apple Watch, with coffee and tea counted differently than water.
Trials with headache sufferers found that simply drinking more water reduced how long and how often headaches struck.












