Four Sigmatic is another coffee alternative that is marketed and crafted in a very unique way. There are three different segments of beverages marketed by the company in a very different way and they function differently too. They are marketed under the names: think, defend and chill. I think coffee is a great way to focus all day long, defend it for your daily nutrition and to strengthen your immune system, and the chill coffee is to make you feel much more relaxed and calm as the name suggests. Yet again, the products are made up of all natural ingredients and are not at all harmful for your body.