[tdicola]

Train while fasted, you'll feel amazing trust me. I do a 16:8 daily fast too and do regular HIIT and strength training while fasted (in the morning). In the fasted state your body is producing more adrenaline and HGH which helps with performance and gains. It also trains your muscles to burn fat instead of sugar (since there's none available), which is incredible for endurance (run a half marathon or more on just water? no problem).

[vldx]

I think training in completely fasted state is ok, but not optimal; you should be cautious not go dogmatic regarding that, as at given point it might halt your progress. From my relatively modest experience (as former client of Martin Berkhan) - BCAA and/or MCT oil prior the workout might yield substantial positives.