One of the main reasons to stay fit is so you can run for a bus and catch it. I've always prided myself on being able to catch just about any bus I want - even if I miss a stop I'll sometimes run for the next one. In the last couple of years this has been getting harder. But recently I tried the North London Fathers' Triathlon, in which one runs for a bus after completing two even more gruelling events.

1) Getting to school to pick up kids while pushing a pram and you're a mile away and five minutes behind schedule.

2) Trying to find every overdue library book in the house within a 15 minute period (at advanced level, there'll be two or three toddler books hidden behind bookshelves)

Is it too late for this to be included in the 2012 Olympics? It could be a gold medal bonanza for Britain...