i just need some sort of list that lists off all the nutrients out there (protein, carbs, vitamin A, etc.) and what they do. im 160lbs and i feel like ive hit a barrier in terms of my physical abilities and i know its because im not eating right. i eat great food (lettuce, eggs, potatoes, bread, etc.) but im not eating the right foods to get what i need and its because i dont know what does what for me. can anybody help please?