Guarana is a herb containing diuretics, which are known to promote the production of urine. By losing bodily fluids you also lose weight. The secondary characteristic of guarana is the ability to stimulate the nervous system and help you cope with stress, which in term helps you avoid emotional eating, one of the main causes of weight gain.
The sweet tasting, great smell plant you usually use in some dishes can also help you lose fat. It does that by regulating blood sugar levels and insulin spikes. Cinnamon was found to significantly reduce blood sugar levels, triglycerides as well as LDL cholesterol. You can sprinke cinnamon on your meals, put some in your tea or use a cinnamon supplement.