I drink a carb/protein (35g carb/15g protein) drink while I train with weights. Should I also do so when I do cardio? For cardio, I do some interval training on a treadmill for ~30 minutes, jogging/running for about 20 of those. I also do some biking. Should I be drinking a carb/protein drink if my main goal is fat loss? I'm about 235-240 but would like to be closer to 225-230.