I think I might be feelinf effects/symptoms of my test now, in week 5.

1. I'm tired as hell. Thought I was overtraining but after a week off I feel the same.

2. I feel very hot in my head (Best way I can describe it).
If I eat foods high in sodium this feeling worsens considerably.


Why does this happen and can/should I do something about it besides the obvious ie lower sodium and generally eat healthy.
I havent had the energy to do my cardio either. Should I just suck it up and try to?