Whether you overdid it on the wine or the cookies, your body probably needs water ASAP. Not only will filling up on water help you digest all the extra food you ate the night before, but it will help boost your energy and feel better. Keri Gans, MS, RDN, CDN, recommends drinking plenty of water as soon as you can and keep drinking it throughout the day. If you are feeling some indigestion, you may also want to sip on some unsweetened ginger tea.