A morning donut could improve memory and the ability to concentrate.
From the article:
If you're having trouble concentrating or remembering things in the morning, it's often because your brain is missing the sugar (generally in the form of glucose) it needs to function normally. The sugar is used as an energy source for the brain so it can do all the things it needs to do. One of those things is producing an important neurotransmitter chemical called acetylcholine, which is important to a good memory, your ability to pay attention, and your mood.
Your brain makes acetylcholine from choline, which is obtained from the diet, and from acetyl groups that originate from the metabolism of sugar. We frequently obtain choline in our diet by eating lecithin. Lecithin can be found in many different bakery goods such as donuts and cupcakes and is commonly added to chocolate. Thus a tasty chocolate covered donut first thing in the morning is going to provide your brain with everything it needs to pay attention and learn new things.
So eat up, oh frosted friends. Partake of a daily donut. And don't forget who told you the news.