From the Maagid: CONCENTRATING / PRAYER: A person is called ADAM, which contains the words DAM (blood) for our life force is in our blood – so why aren’t we just called DAM – for what makes man a man, is the fact, they bring the Alef into the DAM (G-d within.) We achieve this through prayer – hence, one is not meant to eat in the morning, until one prays. However this is only effective if one prays with heartfelt emotion.