I'm having a helluva time getting a decent breakfast prepared for myself here in Japan, and as a result of that I definitely see a difference in my energy level throughout the day. I just found an import store that sold oatmeal and english muffins, so I am hopeful that some oatmeal and english muffins with peanut butter will be the answer to my breakfast dilemma.
Japanese people either do not eat breakfast, or eat crazy shit for breakfast. Some japanese breakfast staples I have seen so far are hot dogs, spaghetti (yet they rarely eat it for dinner) and fish. Not for me man!