Yeah man, supplements are a big lie for the most part. I'd like to say that L-Arginine (nitric oxide precursor) is a good supplement, but I don't even take that anymore. Honestly, protein is all you need. If you got a good night rest and you ate enough calories the day before and the day of your gym visit, then you have everything you need. If you find yourself wanting to go to the gym but you do not have time to eat a full meal, take a scoop of protein 30-45 minutes before the gym. Creatine is crap also. Bloats you with water, raises your blood pressure, and makes your heart, kidneys, and liver work harder for nothing. It's like you live, you learn, then you eat. Food is all you need.