I cycle around 3 times the distance he does daily to and from work in London. I've been doing this for 5 years. It's probably fair to say I take more days off than he does though (I leave the bike at home if going for a drink).

I suppose the same could be said for any form of regular exercise, but it makes such an improvement to how I feel when I get to work, and my general well-being. The pollution in London has always been a bit of a concern, however I hope the exercise outweighs this for the most part. I save around £8 a day by not taking the train.

I wish more people would give it a go. More people riding would result in better and safer infrastructure here. I do however, regularly see people get knocked off bikes and can understand the perceived risk and reluctance from others to try it. I'm envious of cities such as Copenhagen with great safe infrastructure, and where riding is the norm.