I had been diagnosed with low iron last year...

I was sleeping ALL the time. i couldn't get enough energy. I had my blood checked and the nurse said it was within normal limits. I had to findout what they meant. I was actually just within limits and certainly way too low for someone training for mtb racing. I went on iron supplements and started to feel way better. even emotionally. i was just more well, level headed. Because i was so exhausted i was also very emotional. so that is my little experience with low iron.