In March 2012, I left my home in Gloucestershire, UK, to cycle around the world. I have no idea how long this will take ...

Does it take a lot of training to travel by bicycle? Don’t you have to be really fit?

That’s two questions and ‘no’ to both.  One shouldn’t be reckless, especially if older or with an existing medical condition, but the human body is incredibly capable of quickly getting into the swing of a demanding physical exercise regime.  I left on my trip without a day’s training having led a fairly sedentary lifestyle for the prior couple of months.  Sure, I am fairly well-disposed to become fit, but that doesn’t exclude those who can’t leap into action at a moment’s notice.  The key is to ease into the lifestyle of cycling distance every day, starting with few and building up as the weeks and months go on.  Over time fitness is guaranteed.