No, I didn't know that about iron, lack of iron also makes you tired. *pointed stare* My Mum thought I ws low on iron for ages, and made me eat heaps of red meat, but then it just turned out that I had Chronic Fatigue Syndrome, :P

Sleep more! Study more! Write more! Aquire a time-turner! (or maybe just never have fun reading, but I have no right to say that, coz well, I'm me.)