Well, not really, but it's amazing how replacing a worn chainring, chain and cassette, worn brake blocks and cleaning the oily / rubbery crud buildup off the rims can make your bike feel just like new!
I had hoped to get through the winter without having to do this, but I was down to mm of rubber on the blocks and had over an inch of stretch in the chain and had worn almost clean through some of the chainring teeth and well into the little stainless steel pins.