There are very specific ways to peak for cycling. It's been proven over and over again... trust me. If you can't trust me, read one of the Chris Carmichael books- he's a big advocate of periodized training, and he uses periodization for preparing Lance's training schedule. Not only that, USA Cycling, the organization that issues licenses for cyclists and gives the testing for coaches absolutely advocates periodized training. It's one of the first things they teach us when we're going for the first level training license for coaches. They recommend us to use Tudor O. Bompa for research on the subject and use his books to construct periodization programs for our clients. If you're going for your NSCA cert, you'll want to pick up that book anyway. Good luck on that test... I've heard it is really difficult, but once you get certified, you're definitely in demand.