From outdoor parks to callisthenics influencer:
For Demetri, movement has always been an art form.
At 14, he discovered calisthenics, a sport few had even heard of, and turned it into a creative outlet. By 17, he was a decorated competitor, winning international titles and being crowned UK Vice National Champion. But more than medals, Demetri built community; founding youth organisations, inspiring thousands, and reshaping how young people engaged with fitness.
When he joined Fitness First Clapham, he found something he’d never experienced in an indoor gym: belonging.
The open floors became his training ground, the studios his stage. Between PTs sharing knowledge, spontaneous sessions with friends, and even rehearsing dance routines, Fitness First gave Demetri freedom to train like an artist and connect with people who shared his passion.
In return, he’s inspired members and trainers to explore calisthenics, creativity, and new ways of moving.
From outdoor parks to callisthenics influencer, and now to a thriving community at Fitness First, Demetri’s story proves that progress is more than performance; it’s connection, creativity, and choosing to show up together again and again.
At Fitness First, we believe progress isn't linear, results don't come from quick fixes, it's about showing up, again and again. It's not about perfection, it's about progress. Every rep, every class, every choice adds up to real change. Whether you're taking your first step or your next leap, progress is waiting. Because when you choose progress, you don't just change your body - you change what you believe is possible.
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