FITNESS fanatic Leo Robertson visited 52 gyms in 24 hours in one city to break a world record.
Asthma sufferer Leo, 34, did ten bicep curls with an 11lb weight in each before moving on.
He picked gyms in close proximity, starting at his local, and took 13 hours and 49 minutes.
Leo, of Lewisham, South East London, wore a GPS to verify his movements and travelled by foot, train and bus.
He said: “I’m really into the gym and it’s helped me through asthmatic episodes.
“There was a lot of logistics involved in this and it took months to set up.
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“I had to take a photo in each gym, a video of me doing the reps and get witness statements.
“The criteria was by foot or public transport only so I focused on South East and then central London.
“I had to set up calls with every gym as obviously I couldn’t pay for gym memberships for all of them!”
It took Guinness World Records four months to confirm the success, in part due to the complexity of the challenge.
Leo raised £900 for Asthma + Lung UK. The former Guinness World Record was 50 gyms.