Having already climbed the tallest mountains in Scotland, England and Wales, former aircraft engineer and flight attendant Keith Wisdom is no stranger to high-altitude adventure.
But, on Saturday, he scaled a height of a different kind when he climbed nearly 30,000ft on an exercise machine, raising £1,500 for epilepsy research.
Mr Wisdom, 53, completed his challenge in the foyer of Morrison's supermarket, Cromer, taking seven-and-a-half hours to clock up 29,029ft.
The Everest climb was the latest in a series of challenges he has taken part in to support a fund set up in memory of Cromer teenager Ellen Mezzetti, who died from a seizure in 2006 and whose parents John and Lynn are Mr Wisdom's close friends.
All proceeds from the fund go to Epilepsy Research UK, a cause close to the dad-of-two's heart.
'Both my brother and my father died from epilepsy and I think that if enough money is put into research, ideally, we might find a cure, but it would certainly give people with the condition a better quality of life,' he said.
Mr Wisdom's previous efforts in aid of the Ellen Mezzetti Memorial Fund have included doing a 50-mile sponsored bike ride, completing the Yorkshire Three Peaks walk and the National Three Peaks challenge.
Mr Mezzetti, who owns Fighting Fit Martial Arts and Fitness Academy at Cromer, helped Mr Wisdom train for his climb, also turning out on Saturday with wife Lynn and son Jack to support him.
'For Keith to stay on the machine for so long is just amazing,' Mr Mezzetti said. 'He seems to excel at everything he does and the way he applies himself to the things he wants to achieve is amazing.'
Cheered on by friends and family, Mr Wisdom, who works at Homebase, Cromer, completed the final few metres of his challenge after six-and-a-half hours and planted symbolic Epilepsy UK and Union Jack flags on top of his machine before cracking open a bottle of bubbly.
'Having started at 8am, I feel tired and my back aches,' he said. 'But I feel absolutely elated to have finished and I would like to thank all the friends and family who have supported me, as well as Morrison's staff and customers, who have been incredibly kind.'
Donations can still be made via www.virginmoneygiving.com/keithwisdom
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