Apple cider vinegar
Toss a capful or so into a glass of water or warm it up into hot tea. Add lemon, honey, and even cinnamon, if you like. Don’t overdo it, because the acid can hurt your teeth. Vinegar may help keep your blood sugar more stable after you eat, though doctors aren’t sure yet. You also might feel more satisfied on days you have vinegar and be less likely to overeat.