Spices are a fantastic way to flavor food, but they’re not calorie-free like many people think. Yes, they are very low in calories—especially compared to most condiments and sauces. But Gorin says that one teaspoon of cinnamon contains six calories. “You can use cinnamon to sweeten your coffee or as a mix-in to sweeten muffins. Research shows that cinnamon may help control blood sugar levels, especially in people with type 2 diabetes. Even just one gram of cinnamon—about half a teaspoon—daily has been found to have beneficial effects.” This is a spice that’s worth its weight in calories.