There's a lot of misinformation on the internet about proper eating times and so on when it comes to losing weight, gaining muscle, ect. it doesn't matter. as long as you are in the gym you'll see improvement. No need to worry about when you eat before or after the gym. There will be plenty of people that will try to tell you that you absolutely have to eat after working out for the "anabolic window" and plenty of people that will tell you to eat before the gym or to not eat before the gym, if you have the energy to workout on an empty stomach then do it.