We can certainly eat black chana every day if we so choose - after all, they're a healthy and nutritious food! There are some potential benefits to doing so, such as improved digestion and weight loss. Additionally, black chana contain high levels of fiber and protein, both of which are essential for good health. However, it's important to remember that eating any one food every day isn't necessarily the best approach to good nutrition. Our bodies need a variety of nutrients and vitamins from different sources in order to function optimally. So while black chana are a great addition to our diets, be sure to mix things up and enjoy a variety of foods as well!