There are many kinds of food that will give you energy. Energy drinks are often marketed for this purpose. Often, they will include some amount of caffeine. Monster is one of the energy drinks that has the most caffeine. However, a more natural approach would be to grab an apple or some kind of fruit or vegetable. They often have more nutrients that will help you get the energy you need.
You will be able to have more energy when you have something like an apple or a few carrots and some light dressing. While energy bars will also market and claim they do the same thing, they’re often packed with sugar and other things that, in the end, only add up to more weight.