I agree with Der Candy. Mind over matter.
Tired, overtrained and sick today. Felt like absolute shit.
Anyway, I just plowed through my workout. It took a lot of determination but I got through my regular workout just fine, adding weight or reps on all exercises from last time.
The only real side-effect was, I almost projectile vomited my SURGE Workout Fuel towards the end of the workout.. Don't know why, but I felt a lot more full than usual.