I think it depends on how much and how often you ride. If your muscles ache a lot after taking out your bike, it might be a great relief to take some extra minerals and vitamins to help you adjust. But, in essence, I don't think that you need much extra. A healthy diet will get you anywhere you want to go, if you don't overdo it. My main concern is always the amount and quality of water that I consume on long rides. I can't always get spring water, but need to contend with boiled tap water.