Even I've had a bad season for injuries, I've had 34 this season under all circumstances, yes I give my players extra training/friendlies and the friendlies do give me boosters back, but the amount I've had this season has driven me completely bone dry on red boosters on using the reds only for my important players (reserve/fringe players left to heal normally). Michu has been injured about 6 times this season alone.