Do multivitamins do any good or do they just pass through? I think I need to start taking more vitamins. I'm always tired and don't have the energy I used to. I eat very good. Lots of water, vegetables, meats, fats, and carbs. It seems like I have a well balanced diet. I get lot's of sleep. I don't have time to excersize much anymore though since I have a full time job sitting at a desk. What can I do to boost my energy levels. I'm only 22 but feel like I'm 40 sometimes. What kind of vitamins would be best?