I was diagnosed with an under active thyroid last year, and put on a low dose of T4 replacement.
Bit of a random one I know but I'm just about to start week 8(!!!) and noticed that since I've got to the non-stop runs, I'm generally feeling quite tired.
I was wondering if my increased excercise and/or fitness levels may have upset my levels or is this normal for this stage of the programme, or just a complete coincidence and I need to get more sleep?!