Cinnamon water can help lower your blood sugar levels after dinner. This can help your metabolism, aid in weight loss, and prevent metabolic disease.Cinnamon water may also lower your appetite. This can help you avoid late-night snacking and cravings.There are many cinnamon extracts that you can buy. You can dissolve these into hot or cool water and drink it as a dietary supplement. Just like with any other supplement, make sure you ask your doctor first.