If you're cutting or want to fat. No pre workout shake or meal is necessary. That way your body will burn fat as fuel . If your bulking, it doesn't mater, but the post workout drink, in fact take most of your supplements then, are the best time for total absorption. A 50/50 protein and simple carb drink will keep your muscles full and not make you fat. You have that magic hour when your body will use what nutrients you chose more effectally than at any other time of the day.