If drinking turns you into the world's hottest mess, dehydration could be to blame — after all, even those who know better sometimes end up chasing their margaritas with another margarita instead of alternating between alcohol and water.
A new iPhone app called Hydrate Now could help by pinging you constantly throughout the night with reminders to drink something besides booze.
To try it, download the ~free~ Hydrate Now app from the App Store, and enable notifications before your next night out. Then, tap the homescreen when the party begins, and input how much water you need to be reminded to drink. (The app doesn't tell you the right amount to drink — so it's up to you to make that decision.)