Hey, I had mine same day. Yay! I felt really tired the first week but that's all. I think u just need to get in your protein shakes. I take premier protein because it has 30g. I try to drink Two per day. That gives me the best boost. I find that I no longer think of food as providing energy, it's more of a chore so I try to focus on the water and shakes. I eat egg whites, beans, tomato soup, mashed potatoes, avocado, and salmon. That's about it. Good luck.