I do 1 hr of cardio Tue., Thurs., and Sat. Today I am completely drained, had a little 30 min nap in PM. Carbs and calorie intake are fine, I think I'm training too hard right now. Don't want to stop cardio, but can't let myself go down from cardio. I'm going to try a new less stressful cardio routine and see if it helps.
Also doing strength training and 30 min's stationary bike on Mon, Wed., and Fri, without any problems.