We distilled hundreds of expert sources, meta-studies, and the knowledge of top science-based fitness influencers into one PDF. Upload it to any AI — and get expert coaching on demand.
Get Instant Access7 core topics. 1,200+ pages. Everything your AI needs to coach you.
Proper form, cues, and common mistakes for every major lift.
Evidence-based muscle growth principles, volume, and intensity.
Workout structure, periodization, splits, and progression schemes.
Macros, meal timing, supplements, and diet strategies that work.
Sleep, deloads, injury prevention, and optimizing rest days.
Protocols, conditioning, and how to balance cardio with lifting.
Consistency, motivation, and the mental game behind long-term gains.
GainsBrain turns any AI into your personal fitness coach in 3 simple steps.
Get the watermarked PDF delivered straight to your inbox within seconds. No subscriptions, no apps to install.
Drop the PDF into ChatGPT, Claude, Gemini, or any AI that accepts file uploads. It takes 10 seconds.
Your AI now has deep fitness knowledge. Ask about technique, nutrition, programming — get expert answers instantly.
That's it. No complex setup. No learning curve. Just upload and ask.
Every PDF is uniquely watermarked to your purchase. Your personal copy, your personal AI coach.
ChatGPT, Claude, Gemini, Perplexity — any AI that reads PDFs becomes your fitness expert.
Purchase and receive your PDF within seconds. No waiting, no shipping, no hassle.
Distilled from hundreds of expert sources, meta-studies, and science-based fitness influencers. All in one file.
From exercise technique to mindset — comprehensive coverage of everything that matters for gains.
Sourced from respected fitness educators. No broscience — just real, actionable knowledge.
Real results from real users who levelled up their training with GainsBrain.
"I uploaded this to ChatGPT and asked it to build me a hypertrophy program. The answers were unreal — way more specific than anything I'd gotten before. It's like having a coach on call 24/7."
"Finally, my AI actually knows what it's talking about when it comes to fitness. I asked about proper deadlift cues and it gave me detailed, sourced advice instead of generic fluff."
"Worth every penny. I was spending hours watching YouTube trying to piece together a nutrition plan. Now I just ask Claude with this PDF loaded and get solid answers in seconds."
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Hundreds of expert sources. One PDF. Every answer your AI needs to become your personal fitness coach.
Get GainsBrain — $19.99