By Tom Midlane @GoldenLatrine
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Videographer / Director: John Robertson
Producer: Tom Midlane, Chloe Browne
Editor: Ian Phillips
Dr Charles Eugster ran a time of 23.78 seconds in the M-95 (males aged 95 or over) category at the British Masters at Alexander Stadium, Birmingham, on Saturday July 25.
He then followed that up with a record-breaking 57.27 seconds in the 200m on the Sunday - 0.8 seconds faster than his time last year.
The high-octane OAP already holds the world record in the M-95 category for 200m indoors, which he set at the British Masters Championships in Lee Valley earlier this year and bettered in Poland at the European Championships.
Former dentist Charles, who was born in London, said: "In the UK nobody of my age had attempted to run these races competitively, so all I had to do is stagger over the finish line alive.
"I was really pleased with my time though, it had to be of a certain standard or otherwise it wouldn't have been accepted.
"I was quite surprised at the finish that I wasn't as knackered as I usually am!"
As Charles is usually the only person in his age bracket, he frequently runs alongside athletes from younger age categories - and he admits the women can be a distraction.
He said: "In one of my races I ran with the over-70s women. It gave me an incentive - to chase a female bottom."
While Charles has a haul of rowing medals from regattas down the years, amazingly he only began running competitively in 2014.
He now has his sights set on the World Championships in Lyon in August of this year.
Charles' training has been overseen by his coach Sylvia Gattiker, who has trained him for the last six years.
She said: "He's a little bit tired but we're thrilled with the result.
"In the training session his time wasn't so good so we're really excited and happy with the outcome - it's a brilliant time and I'm really proud of what he's achieved."
The nonagenarian originally turned to bodybuilding at the age of 87 after growing disgusted at his own ageing body.
He now lives by a strict mantra of work, nutrition and exercise, and travels around the world to preach the benefits of staying active into old age.
Charles said: "Old age is something to look forward to - it can the most enjoyable, wondrous, stupendous, exciting period of anybody's life.
"But from the age of about 50, we all start losing muscle mass - so it's important to stay active."
And Charles says his greatest inspiration to stay in good shape comes not from the athletics world, but from the QUEEN.
He said: "She does not retire, she is nearly 90, she has a punishing schedule - I think that she sets a wonderful example and I think her subjects should do the same.
"When I retired I imagined it would be like an endless holiday, but it opened a door to a chamber of horrors.
"Starting bodybuilding saved my life, but I took that as far as I could. Now I want to see what I can achieve in the world of running.
"I want people to know that you can reboot your body at any age - you're never too old."