Does anyone have any recommendations for nutrition to get more alert/focused for part of the day besides drinking coffee (doesn't seem to do much for me)? In order to fuel my nutrient needs, I'm constantly eating large amounts of carbs throughout the day and this makes me feel tired and sluggish for awhile once I finish a meal. I'm a college student and I feel like I can't focus or be productive through my classes and studying. I was looking into intermittent fasting because I read that when people fasted in the morning and had some black coffee, they became very alert and were able to get a lot of work done, and then simply eat their food later in the day, but I'm not convinced of the science behind this way of eating... Any recommendations?