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
What If You Can Only Train at Busy Times?

Best Time to Go to the Gym for an Uninterrupted Workout | 12reps

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

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Women's Strength Training

Toned Arms Without Bulk: A Woman's Guide to Sculpted Arms

Toned Arms Without Bulk: A Woman’s Guide to Sculpted Arms

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

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Man in his forties performing dumbbell exercises with proper form

Strength Training in Your 40s: What Changes and How to Adapt

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

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Workout Programmes

How to Get Stronger: The Complete Guide to Building Real Strength

Running vs. Strength Training: The Ultimate Guide to Weight Loss

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

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12REPS app strength training app workout tracker interface

12REPS: The Ultimate Weightlifing App 2026

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

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Training Tips & Guides

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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diagramMuscles activated during free weight vs machine press

Free Weights vs Machines: Which Is Better for Building Muscle?

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

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