Raw apple juice comes packed with healthy sugars, including fructose, or fruit sugar. Each 1-cup serving of fresh-pressed raw apple juice offers 38 grams of total carbohydrates, with 28 grams from natural sugars. Your body absorbs the sugar in apple juice and converts it to glucose -- the primary source of energy for your muscles, brain and other tissues.
The sugar in juice absorbs and digests relatively quickly, which makes it a good option for almost-instant energy. If you're looking for more sustained energy, though, you're better off just eating an apple.