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He has kept followers of his blog updated with hilarious tales of hungover gym sessions, sick notes from his mother and last minute hotel room workouts.
And all the hard work and sweat paid off for Vernon Kay as he completed the London Triathlon this weekend.
The TV presenter was triumphant as he crossed the finish line at the ExCel centre, and collapsed, exhausted into his proud wife's waiting arms.
Tess Daly was there to support her husband, who swam, cycled and ran as part of the event to raise money for Great Ormond Street Hospital.
Another competitor was Formula One star Jenson Button, who was taking part for the second year running. In 2009 Button completed the Olympic distance race in an impressive two hours and seven minutes.
The sportsman kept his cool throughout today's race, attracting many female admirers in the watching crowds, his athletic build on display in a sleeveless wetsuit.
While Vernon has boasted that he is in the best shape he's been in since high school, he didn't quite match the panache of Jenson.
His choice of a bright pink swimming cap and over sized swimming goggles gave the 35-year-old a somewhat goofy appearance as he emerged from The Thames and struggled with his wetsuit.
The father-of-two suffered a setback in May, when he got into a spot of bother with some aggravated cows.
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He told the hilarious tale on his blog: 'I got charged by around 20 of the blighters in a field near our house forcing me to dive over a barb wire fence grazing the whole of my left side and tearing my favourite golf jumper!' he said.
'The result is a very damaged ego and a sprained wrist. I must have looked like a right plum, if Harry Hill gets his hands on this footage it will go down in history as the funniest home video ever!!'
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As they left the ExCel centre with their arms wrapped tightly around each other, Vernon and Tess looked as though their relationship is firmly back on track, and the racy text messages incident is well behind them.
In February Vernon admitted exchanging racy texts and Twitter messages with glamour model Rhian Sugden. But all appears to be forgiven and it was a case of happy families for the TV presenters.
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source: dailymail