Yes this sounds just like me! I am on my 6th day of induction and my legs especially feel so tired. I also have been exercising everyday, walking four miles every night. Maybe u are not getting in enough carbs to support all that exercising you are doing? The only thing I would suggest is getting rid of the diet soda and sticking to pure water. As for being energetic? A friend of mine told me the first two weeks she felt really tired, but after the initial phase, she was full of energy. Still waiting for all that energy to come to me.