14 Years.
No Shortcuts.

Callan Headrick is a personal trainer, strength and conditioning coach, and registered nutritionist with 14 years of experience coaching clients across Edinburgh and online worldwide. He specialises in body composition and performance — helping people build the physique and the physical capacity to match their ambitions, whether that's dropping significant body fat, building serious strength, or performing better in sport.

Callan trains alongside his clients. He competes in Muay Thai and BJJ, lifts regularly, and applies the same standards to his own training that he brings to his coaching. That background shapes everything about how Lean Bodies operates — the programming is rooted in what actually works for real athletes, not what looks good in a fitness magazine.

Based at Hanuman Muay Thai in Edinburgh, Callan works with a limited number of in-person and online clients at any one time. Spots are kept intentionally small. Every programme is built from scratch for the individual, adjusted continuously based on real data and real results.

Over 14 years he's worked with hundreds of clients — from people stepping into a gym for the first time to competitive combat sports athletes managing body composition and performance simultaneously. Clients come to Callan when they've tried the generic routes and want something that actually sticks. The consistent feedback: the programming works because it's built around you, adjusted as you progress, and never treats you like a template.