There are music channels with selections ranging from classical to jazz to rap. Look in the airline magazine for details and channel numbers. Finally, there is a volume control which can be adjusted for your comfort. This is the time you should start telling yourself to wake up and start being alert for the challenges that will face you when you arrive. The flight attendants will offer you a choice of beverages, which is an excellent time for coffee or tea.
Caffeine is a powerful circadian clock resetter.
If you do not drink caffeinated beverages, request what you usually have in the morning - juice or milk, perhaps. Orange juice is full of fruit sugar, which will jolt your blood sugar up a notch or two, making you feel more awake. If you are morning-only coffee drinker, then skip it. The airlines usually offer a light meal, such as a fruit breakfast or mid afternoon snack. This is exactly right, as it gets your blood sugar up without being too heavy.