It really depends on what your trying to do.... If your rides are all attempting to be 40MPH hammerfests, then a mid-ride break of an hour for a huge breakfast, you need to remember that eggs, bacon, sausage will solidify in your stomach, and leave you craving the bonk. A casual ride (10-15MPH) with a nice stack of pancakes with Canadian Maple Syrup in the middle, and a good half hour after eating before getting on the bike, you should be fine. Oh and another thing, avoid coffee at breakfast. Coffee is a diuretic, it dries you out, you want to be well hydrated for the ride home, so order a couple of glasses of ice water, put the leftover ice water into a bike bottle for the ride home.