There are days when cycling suddenly becomes effortless: flying up hills that you could only previously crawl up, speeding along in the biggest gear. You think, in your vanity, that it is you – your new exercise regime, your newly trim figure, your increasing fitness. Or perhaps it is your shiny new bike, or even this piece of freshly laid shiny new road before you. Whatever it might be, you wing along with a song in your heart, faster and further than you have ever gone before.
And then you turn around to go home, and discover that it was, in fact, a tail wind.