works on different people, i love fasted cardio. if i eat before i go to the gym i feel lazy and tired BUT if im fasted i have a better workout, i drink Robinsons no sugar mixed with water and plain BCAA, that does me nicely during the workout, after i finish (1hr30m) later which includes my shower.. i then walk home and make myself a nice big meal. I workout every morning by the way, my alarm goes off, do my toiletries..brush my teeth, get my bottle of water with robinsons and mix wth BCAA then 10min walk to the gym.
do each for 1 week and see which one suits you best.
Good luck!