The apple is low gi and most prob. your bread was too. 20min after that low gi breakfast, the carbs absorption would have been very little. And as soon as you start to get hypo from too little carbs, you'll be chasing your tail, so to speak, the rest of the ride. Eat more carbs before you go ride, dont know your weight, but 50g 1 hour before the ride is a good start. Top up the glucose stores with a energy drink while you ride. If the ride is less that 1hr stick to water only, if more than 1hr, top up. No use in depriving yourself from carbs before a ride, and then riding like crap. You'll see better results if you eat correct and ride harder. But just for safety, let your gp give you a check over. good luck
