To enjoy the glow of good health, you must exercise.

I’m healthy now. I probably wouldn’t say I’m at my best fitness level and I haven’t played that much lately, but I’m healthy and that’s all that matters.

Fitness will be a major factor in the first race and I think that will play into the hands of drivers who have been racing recently, rather than people like me who haven’t raced properly for a decade. I’am not one of the favourites to start with.

Guided only by their feeling for symmetry, simplicity, and generality, and an indefinable sense of the fitness of things, creative mathematicians now, as in the past, are inspired by the art of mathematics rather than by any prospect of ultimate usefulness.

For years, I always thought it was hilarious that I was this fitness guru, because fitness was just a tool I utilized to help people improve their confidence. For me, it’s never been about fitness. It’s always been about helping to empower people.

I have always maintained a high level of fitness, and that is why I am still able to handle the demands of playing in the Premiership. People have always commented on my fitness, and it’s something I pride myself on.

I was a bit worried coming back to the Premiership from America, but I have been pleased with my form, and the interest I have received has been good for my ego. I have no worries about my fitness, and I am really looking forward to the season starting now.

I’ve published one book before, and now I’m writing a book of essays and stories about life in Tokyo. And I have one book coming out in May in Germany, about fitness.

For a good workout, I go to At One Fitness in North Hollywood, where my trainer, Jon Allsop, puts me through it all. I like it because it’s a small gym and I’ve known the people for a long time. Jon will have me do cross-training where I’ll lift weights, jump rope, throw around a medicine ball and I never get to stop.

There are similarities between business and sport, in the pressures involved and in the fitness aspect too.