Aside from spearmint being known to help settle an upset tummy, it is packed with antioxidants and may also help alleviate nausea, promote better sleep, and reduce stress among other things, all of which contribute to a successful diet plan. Spearmint is super easy to incorporate into your diet. Add some into your water for some flavor, make healthy mojitos for celebrations, add spearmint to your baking, and of course, don’t forget spearmint tea.