At weekends, I've been going on long but steady-paced four-and-a-half-hour bike rides.

I mean, I'm lucky because I've slimmed down, but the last thing I was thinking about was losing weight.

I did the Kilimanjaro climb a few years ago, then the six-day trek to Machu Picchu in Peru so this bike ride to raise money for Great Ormond Street seemed like the next big challenge.

I'm not changing to the point where suddenly I wear floor-length skirts and start playing the violin; I'm just growing up a little bit, I guess.

Young girls look to me as a role model and think I crash diet to keep slim. That's not true, I always eat properly.

At weekends, I've been going on long but steady-paced four-and-a-half-hour bike rides.

Now I look back and think if I'd spent more time enjoying myself instead of crying into my pillow over men, my 20s would have been fabulous!