Eating before the dawn is a recommended deed of fasting, and it has been narrated in a tradition:
"Eat before dawn even if it be only a drink of water, because Allah sends salutations upon those who eat before dawn for fasting."
During awakening for eating before dawn, in addition to the recitals of invocations (dhikr) and special prayers, recital of Surah al-Qadr (Power) carries plenty of reward, and it has been narrated:
"Every believer who observes fast, and at dawn (sahar), and fast-breaking (iftar) recites Surah al-Qadr (Power), during the period dawn and fast-breaking is like the martyr who is wallowing in his own blood."
Of course, we should keep in mind that our aim for eating at dawn is to perform a recommended religious act, as well as it provides us required strength in order to enable us to observe the fast.