How do I install Petra?

Download the .md file, paste the full contents into Claude Projects Instructions, add your fitness context, and start your first session. Works with Claude, ChatGPT, or any AI chat accepting system prompts.

Which AI tools does Petra work with?

Works with Claude (recommended), ChatGPT, and any AI chat accepting system prompts. Claude Projects keeps Petra loaded for ongoing programme updates as your fitness level progresses.

Can Petra adapt programmes for home workouts without equipment?

Yes. Petra asks about your equipment access during setup and designs the programme around what you actually have — bodyweight programmes, gym-based plans, or anything in between depending on your situation.

What is included in this download?

One .md skill file delivered instantly after purchase. Paste it into Claude Projects Instructions and Petra is immediately ready. No subscription required — yours permanently. Works with Claude, ChatGPT, or any AI chat.

AI Fitness Planner Skill for Claude & ChatGPT

Q: What does Petra design for fitness and wellness?

Petra designs workout programmes that fit your actual life — available time, equipment access, current fitness level, and whatever has made previous programmes fail. She builds plans you will actually follow, not ideal-world schedules.

Petra designs fitness programmes that fit your real life — available time, equipment, and goals inside Claude. Realistic. Non-judgmental. Programmes you will actually do.

Petra — Fitness & Wellness Planner AI Skill

$29.00

Petra — Fitness & Wellness Planner AI Skill

$29.00

Digital download — instant access

Nothing ships. The moment checkout completes, your download link lands in your inbox. Pay once, keep forever — no subscription, no expiry. Works with Claude, ChatGPT, and any AI chat. Secure checkout handled by Shopify.

Drop Petra into Claude and get a Fitness & Wellness Planner who designs workout programmes that fit your actual life — available time, equipment access, current fitness level, and whatever has made previous attempts fail — because a 30-minute home workout three times a week that someone actually does beats a perfect gym programme abandoned after two weeks.

Most fitness programmes fail for practical reasons, not lack of desire: the plan is unrealistic for the available time, the gym is too far on a rainy evening, travel isn't accounted for, or the exercise is genuinely not enjoyable. Petra is one of the most life-calibrated AI fitness tools available in Claude format — she asks about available time, equipment, and life constraints before building anything. She emphasises health, energy, and strength rather than framing everything as appearance change, and is alert to signs of disordered exercise. For injuries, serious medical conditions, or post-surgical recovery, she consistently recommends professional guidance.

What you get

→ Fitness programme design — weekly workout schedules built around your available time, training types balanced (strength, cardio, flexibility, recovery), progressive structure built over weeks and months, adapted for gym, home, minimal equipment, or bodyweight only, and rest days and deload weeks built in rather than treated as failure
→ Workout creation across all training types — strength training (full body, upper/lower splits, push-pull-legs), cardio (steady-state, zone 2, intervals), HIIT for time-efficient sessions, yoga and flexibility routines, bodyweight and no-equipment workouts, and complete home workout programmes without gym access
→ Goal-specific training plans — weight loss (calorie burn, sustainable deficit, maintaining muscle), muscle building (progressive overload, volume, frequency), running (Couch to 5K, 10K, half marathon), cycling structured plans, general health and longevity aligned with NHS physical activity guidelines, and appropriate training for 50+ and active ageing
→ Lifestyle movement and habit building — daily step count and active commuting strategies, walking programmes for beginners, habit stacking (attaching exercise to existing routines), staying active while travelling, managing consistency during busy periods, and breaking through plateaus without burnout
→ Recovery and injury prevention — sleep, nutrition, and active recovery principles, mobility and flexibility routines, warm-up and cool-down guidance, common beginner mistakes that cause injury, when to rest vs push through, and return to exercise frameworks after breaks or time off
→ Wellbeing and mental health through movement — exercise for stress and anxiety management, sleep improvement through movement, building body confidence, finding enjoyable movement forms, and framing fitness around energy and strength rather than appearance so motivation comes from how exercise feels rather than just how it looks

📄 petra-fitness-planner.md

Under 2 min install

Works with Claude Sonnet 4 & Claude Cowork

How to install

Download the .md file → open Claude → paste the file content into your system prompt or Project instructions → tell Petra your goal, available time, equipment access, fitness level, and what has not worked before → she builds a realistic programme instantly. For injuries, serious medical conditions, or post-surgical recovery, consult a GP, physiotherapist, or certified personal trainer.

How to install Under 2 minutes

Four steps. Any AI chat.

01
Download the file
After checkout, the download link lands in your inbox. Save the file anywhere on your device.
02
Open your AI chat
Claude, ChatGPT, Gemini, Grok, or Copilot — whichever one you already use.
03
Paste the file contents
Drop it into the system prompt, Project instructions, or custom instructions field.
04
Start working
Your AI is now configured as a specialist. Ask it anything inside its domain.