We don't have to tell you what this plant looks like, we're sure you all know it well. In summer the fruits are a popular ingredient in our kitchens. In addition to their culinary use, these dark blue balls are good for much more. Blueberries are an important source of antioxidants, supporting the function of the retina and maintaining eye health. They are used for good blood circulation in microfibres, and they even help reduce the feeling of heavy legs.