well..I do not know what's going on but I just cant get through a workout anymore these days! I am so weak and tired and I always end up doing the bare minimum AND stopping halfway through so I dont fall over. I am very depressed about it because I should be in better shape than this! I was 20 pounds ago... This happened to me the one other time I tried to get into better helth at this exact same weight and 2 weeks later I found out I was pregnant. I do not expect that to be the problem this time so what IS the problem?!