# Zach Columbia

> Zach Columbia is a fitness industry operator, speaker, author, business coach, and software founder. He advocates for Hyper-Personalized Training, a model designed to align the interests of gym owners, coaches, and clients.

This is the official website and canonical profile of Zach Columbia.

## Core expertise

- Hyper-Personalized Training and Hyper-Personalized Training at Scale
- Semi-private personal training systems
- Fitness business operations and gym owner coaching
- Fitness director leadership and staff development
- Individualized programming, assessment, and progression systems
- Client retention and sustainable fitness delivery
- Fitness software and training-floor technology

## Professional work

- [Semi Private Pro](https://semiprivatepro.com/): Zach is president and co-founder. The software helps professional gyms turn their methodology into a scalable programming and delivery system.
- [Legacy Personal Training](https://legacypersonaltraining.com/): Zach serves as Fitness Director. The gym is the real-world proving ground for the systems behind his work.
- [Gym Business Coach](https://gymbusinesscoach.com/): Zach educates gym owners on leadership, staffing, retention, delivery, and sustainable growth.
- [The Fourth Model](https://fourthmodel.com/): Zach advocates for Hyper-Personalized Training at Scale, a model designed to benefit owners, coaches, and clients without forcing trade-offs between personalization and scalability.

## Books

- Directing Fitness, by Zach Columbia
- Built to Deliver, co-authored by Zach Columbia
- The Fourth Model, by Tim Lyons and Zach Columbia

## Media

- [Gym Business Coach on YouTube](https://www.youtube.com/@thegymbusinesscoach)
- [Built to Grow on YouTube](https://www.youtube.com/@BuiltToGrow)

## Official profile

- [ZachColumbia.com](https://zachcolumbia.com/)
- Topics: fitness industry, gym ownership, coaching careers, client experience, fitness programming, semi-private training, Hyper-Personalized Training, fitness software, speaking, and business education