It’s Newton’s 4th Law: the harder you party, the more you’ll regret it in the morning.
Party Animal Survival Guide: How to have your weekend without regrets!
After a long night of drinking, your blood vessels shrink, and so your brain tells them to expand again, which is the painful swelling you feel when you wake up.
Take re:play before you go to sleep to replenish your cells.-- Re:play floods your brain with the replenishing fluids it needs, reducing the swelling of your vessels and getting rid of that awful headache.
Take pre:play the next morning to charge your day with hydrated energy. -- Pre:play provides your body with the same replenishing fluids at re:play, but also gives you time released energy to get you through your day.