Energy booster?

i wouldnt suggest any energy drinks (loaded with sugars/carbs) and the only thing i would say is that a vegetarian diet is very hard to maintain energy levels on as there are some nutrients that you just cant get out of vegies as you can from meats such as protein (red meat) and omega 3 (fish) try to consume a higher carb meal at school for lunch (pasta, rice) this will help with a carb hit which is just like a sugar high. also if you are looking for ajuice try anything natural like a freshly squeezed orange and mango pineapple as the natural sugars too will give you a kick.