Waiting an hour will only make your B.A.C. higher in most cases. Another item to remember, that will have a direct affect on your B.A.C., is to eat something . Remember, the alcohol goes through the stomach to the small intestine. Eating something delays the alcohol entering into the small intestine and thereby slowing down the absorption rate into the blood stream. Eating will not stop absorption, it will only slow it down.
Alcohol loves water.
Alcohol has an affinity for water. Alcohol will distribute itself not throughout your entire body, but just in the water bearing tissues of your body. The higher the water bearing tissue or organ, the higher the blood alcohol concentration will be in that tissue or organ. For example, higher concentrations of alcohol can be found in the liver, blood, lungs, muscles, etc. Less water, and no alcohol concentration will be found in areas of bone, fat, cartilage, etc.