Eight years ago Gary George had a stroke. He was just 35. After spending two months in hospital, he was paralysed down his left side side and unable to speak.
When he returned to south Wales he set about his recovery with intense physiotherapy sessions and speech and language therapy. Gary decided he wanted to aim high in his training, not just to regain what he had lost, but to face challenges that even the fittest of people may find difficult. He joined a gym in Cardiff and in the years that followed, he not only conquered the Three Peaks Challenge, but also walked the Great Wall of China, ran the London Marathon and even climbed to Everest Base Camp.
Now Gary is using the training skills he's learned to help others, by qualifying as a personal trainer specialising in training other stroke survivors, helping them to reach their own goals.
Watch Megan Boot's report: