Nutrition could be THE most important subject when it comes to the human machine. You really have to be diligent about what you fuel yourself with. Foods that are really great for you? By and large they are not advertised. You have to seek them out. Hempseed, flaxseed, moringa, chia seeds, grass fed free range meats, true organically produced fruits and vegtables...right down to unfluoridated water...you really have to expend some energy and extra money to get the best fuel. But the rewards are so worth it.
The major corporations and your leaders have no problems with you consuming sugary drinks, pre packaged foods, GMO's and all the non foods that are pushed on kids...but you should. Things like Red Bull? That's bad sh*t and has no business in your body.