The 12REPS Fitness Blog

Expert workouts, nutrition guides, and strength training tips from certified personal trainers. Transform your training with science-backed advice.

Featured Article
Woman at the finish of a rowing stroke, leaning back slightly with the handle below her ribs

How to Use a Rowing Machine: Right vs Wrong Technique

How to use a rowing machine with good technique, from a personal trainer. The four parts of the stroke, common mistakes, damper settings and beginner workouts…..
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Women's Strength Training

Is It Too Late to Build Muscle After 40? Science-Based Truth for Men and Women 40+

Building Muscle Mass After 40: Science-Based Strategies for Mature Adults

By Will Duru, BSc (Hons) Sport and Exercise Science, Award-winning Personal Trainer Read more

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Science-Based Strength Training for Women: Build Muscle, Confidence & Longevity

Strength Training Schedule for Women: A Science-Based Guide

By Will Duru, BSc (Hons) Sport and Exercise Science, Award-winning Personal Trainer with Read more

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Workout Programmes

Desk job destroying your body? Learn how strength training reverses the damage from sitting all day. Fix posture, eliminate pain, build strength.

Strength Training for Desk Workers: Fix Your Posture and Build Real Strength

By Will Duru, BSc (Hons) Sport and Exercise Science, Award winning Personal Read more

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Why ChatGPT Can't Be Your Personal Trainer: The Problem with AI-Generated Workout Plans

Why ChatGPT Can’t Be Your Personal Trainer: The Problem with AI-Generated Workout Plans

“ChatGPT, write me a push pull legs programme.” Millions of people have Read more

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Training Tips & Guides

I Asked ChatGPT to Plan My Workouts for 12 Weeks: Here's What Happened

What ChatGPT Gets Wrong About Muscle Building: Common AI Fitness Myths

By Will Duru, BSc (Hons) Sport and Exercise Science, Award winning Personal Read more

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ChatGPT vs Personal Trainer: Why AI Will Never Replace Human Coaching

ChatGPT vs Personal Trainer: Why AI Will Never Replace Human Coaching

By Will Duru, BSc (Hons) Sport and Exercise Science, Award-winning Personal Trainer with Read more

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