Why Wait Until Jan. 1? Start This Supersimple 6-Step Fat-Loss Plan Today

Staying hydrated will not only fill you up and make you feel energized, but sometimes hunger is actually thirst. "Water intake is, I believe, one of the best weight-loss tips that you can do," trainer and fitness guru Bob Harper said in an Instagram video. Carter said to aim to drink eight to 10 cups of water every day (or go for a gallon!). Keep a reusable water bottle with you to encourage you to sip throughout the day.