Anatomy

Understand your body — muscles, joints, and movement systems for smarter training

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🎯 What This Section Covers

This is your complete body reference for training. Use it to:

• Understand what muscles an exercise works — and how intensely
• Learn how joints move — and their normal ranges of motion
• See how muscles connect — through myofascial chains
• Map activities to anatomy — what swimming, running, or sports train
• Identify imbalances — what's overworked vs underworked in your routine

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📚 Sections

💪 Muscles

Muscles

Everything about the muscles you train — location, actions, best exercises, common issues.

12 muscle groups covered:

Upper Body	Core	Lower Body
Chest	Core	Quads
Back		Hamstrings
Shoulders		Glutes
Arms		Hip Flexors
		Adductors
		Calves

Each muscle page includes:

• Anatomy (origin, insertion, fiber direction)
• Actions and joints crossed
• Functional roles (when agonist vs synergist)
• Best exercises with activation levels
• Stretches and common issues
• Myofascial connections

🦴 Joints

Joints

How your joints work — structure, range of motion, actions allowed, and common issues.

8 joint complexes covered:

Upper Body	Spine	Lower Body
Shoulder	Spine	Hip
Elbow		Knee
Wrist		Ankle
		Foot

Each joint page includes:

• Joint type and structure
• Normal range of motion
• Actions allowed
• Muscles acting on it
• Common issues and injuries
• Mobility and stability exercises

🏃 Movement

Movement

Fundamental concepts for understanding how the body moves.

Page	What You'll Learn
Movement Patterns	The 7 fundamental patterns (squat, hinge, push, pull, lunge, carry, rotate)
Planes of Motion	Sagittal, frontal, transverse — and why balanced training uses all three
Joint Actions	Flexion, extension, rotation — the vocabulary of movement
Kinetic Chains	Open vs closed chain exercises and when to use each
Myofascial Lines	How muscles connect through fascia (Anatomy Trains)

⚡ Physiology

Physiology

How muscles work at a deeper level — for optimizing training.

Page	What You'll Learn
Muscle Roles	Agonist, antagonist, synergist, stabilizer — and why it matters
Fiber Types	Type I vs Type II fibers and how to train each
Contraction Types	Concentric, eccentric, isometric — and training applications
Energy Systems	ATP-PC, glycolytic, aerobic — fueling different activities

🏊 Activities

Activities

What muscles and joints different activities train — and what they miss.

Activity	Primary Focus	Common Imbalances
Swimming	Upper pull, full body	Overdeveloped lats, weak lower traps
Cycling	Quads, glutes	Tight hip flexors, weak hamstrings
Running	Posterior chain, cardio	Weak glutes, tight calves

Use these pages to:

• Understand what your favorite activity trains
• Identify gaps in your training
• Choose complementary exercises

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🚀 Quick Start

"I want to understand an exercise"

→ Go to Muscles and find the target muscle. The "Best Exercises" section shows activation levels and alternatives.

"I want to know what I'm missing"

→ Go to Activities for your main activity. The "Common Imbalances" section shows what to add.

"I have pain or tightness"

→ Go to Joints for the affected area. The "Common Issues" section explains causes and solutions.

"I want to learn the fundamentals"

→ Start with Movement Patterns and Muscle Roles.

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🔗 How This Connects to Other Sections

Section	Relationship
Exercise Library	Each exercise links to the muscles it works
Programs	Programs are built on movement patterns and muscle balance
Goals	Goal pages reference which muscles/activities to prioritize

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📖 How to Use This Section

For Quick Reference

Each page has a Quick Reference table at the top with key facts. Scan this for fast answers.

For Learning

Read the expanded sections (Anatomy, Actions, Functional Roles) to understand how things work.

For Training Decisions

Use the Best Exercises sections to pick movements, and Common Issues to troubleshoot problems.

For Deep Dives

Collapsed sections (Myofascial Connections, Sources) contain advanced details for those who want more.

Navigation Tip

Use the sidebar to jump between pages. Each page cross-links to related muscles, joints, and exercises.

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📊 Section Status

Section	Status	Pages
Muscles	🚧 Building	8/12
Joints	📋 Planned	0/8
Movement	📋 Planned	0/5
Physiology	📋 Planned	0/4
Activities	📋 Planned	0/7

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For Mo

The anatomy section is the foundation for exercise recommendations. When a user asks about muscles, exercises, or activities, reference this section for accurate information about:

• What muscles an exercise targets (and activation levels)
• What exercises are best for a specific muscle
• What activities train which body parts
• Common imbalances and how to address them