An apple in the morning has just as much caffeine as a cup of coffee.

When you’re asleep, the temperature of your body goes down slightly and so does your blood pressure. Getting back to normal levels does take some time, and this is the reason you get that slugging feeling when you first wake up.

Some get around it by smoking a cigarette, others a cup of coffee does the trick, and for some, an apple a day keeps the proverbial doctor away from the lethargy. Speaking of apples..
The fruit is a great source of multiple nutrients. An average apple contains 12 percent of your recommended daily fiber intake, and 10 percent of the recommended dosage of vitamin C per day, not to mention minerals like calcium, potassium and manganese. It has been claimed that apples do contain caffeine, just like coffee. However, this is a myth and repeat, apples HAVE NO caffeine.
So, where did this come from? The misconception emanates from the fact that apples have sugar in them (fructose) and people equate the energy boost they derive from a cup of coffee with that they presumably get from consuming an apple.
The thing is, an apple does contain more sugar than a typical cup of coffee. If you juxtapose the glycemic index of apples and typical table sugar, apples with 38 out of 100, are about half as stronger as table sugar which has 68 (glycemic index is basically how fast ingested glucose finds is absorbed into the bloodstream). As such, if what you want is a quick energy boost, a cup of coffee will suffice. However, an apple may be your healthiest option since, after all, it doesn’t give you the let-down effect you’re likely to experience with your morning devotion cup of coffee.