I totally forgot to weigh myself today at the gym. I've been doing extra workouts during my lunch hour and I'm discovering some really cool mini workouts on my iPhone through Nike. Problem is, apparently my body is not used to this. I did a pretty hard ab workout today and I was lethargic the rest of the day. I actually started getting a migraine towards the end and had to leave my lab early. My point is I am getting REALLY tired after these workouts but I don't have but maybe 30 - 45 minutes tops to get something done so I like to do them full throttle. Since I am trying to drop a few pounds I have been watching calories pretty closely too and I think I'm may not be eating enough protein??? Can that cause a sudden onset of fatigue like this? I just had a complete workup with my doctor so I know I'm good there. I do take iron for slight anemia but have never had it drain me like this has? I'm relatively new to trying to increase muscle from resistance training so I don't know what the usual and customary amount of protein vs. carbs distribution is during a building stage?