It's a question of spreading the available energy, aerobic and anaerobic, evenly over four minutes. If you run one part too fast, you pay a price. If you run another part more slowly your overall time is slower.

We run, not because we think it is doing us good, but because we enjoy it and cannot help ourselves...The more restricted our society and work become, the more necessary it will be to find some outlet for this craving for freedom. No one can say, 'You must not run faster than this, or jump higher than that.' The human spirit is indomitable.

It's a question of spreading the available energy, aerobic and anaerobic, evenly over four minutes. If you run one part too fast, you pay a price. If you run another part more slowly your overall time is slower.

I trained for less than three-quarters of an hour, maybe five days a week - I didn't have time to do more. But it was all about quality, not quantity - so I didn't waste time jogging, ever.

Our concept of a family holiday was going to a guest house in the Lake district or Wales, where walking was part of the holiday.

If there was the opportunity to climb a mountain, or to go ballooning, or some adventurous activity, I would always be keen to do it. I loved the countryside.

May is a very early time in the year and the weather is usually bad. You cannot run a fast mile race if there is a strong wind, because it makes your running uneven.