A cyclist from Norfolk has described how discovering electric bikes "gave him his life back".
Tim Gregory used to compete internationally before he was diagnosed with fibrosis of the lungs and told he could have just two years to live.
Doctors saved his life but he was left with 25 per cent lung function.
He says the assistance provided by an electric bike can keep more people in the saddle.
- Click below to watch a full report from ITV News Anglia's Rob Setchell.
Tim, who was instrumental in forming Norwich Flyers BMX club when he was a teenager, was so determined not to give up cycling that he even brought an exercise bike to hospital with him.
Despite his illness, he conquered some of the big Tour de France climbs in the Alps.
Tim was an instant convert to electric bikes, which offer the benefits of pedalling but with a battery and a motor for assistance.
Different settings help you reach speeds of just over 15 miles an hour.
He says e-bikes are starting to outsell normal bikes in places like Germany and the Netherlands and that they are on the rise in the UK.
He's started a business selling them in Langley in Norfolk and says they have big benefits for health, the environment... and all those people who want to keep cycling as they get older.
"It gave me my life back. It totally has given me my life back. You can see I get quite emotional talking about it. I never thought I'd be out riding properly with friends to quite a high level ever again. That part of my life had gone and to be given it back, well, it makes me quite emotional."