AI Coach¶

Your 24/7 Q-V-ROOT-8-45-Impulse-Jin Expert.

What Is the AI Coach?¶

A Coachvox-trained AI that knows the entire 30-chapter Unified Tennis Handbook, every CORE variable, every stroke system, every diagnostic, every drill.

It doesn't give generic tennis advice. It gives YOUR system's advice.

What It Can Do¶

Capability	Example
Diagnose your stroke	"My forehand goes long under pressure" → "Check BRAKE: front leg not stopping. Drill: Wall Push Pulse."
Explain any variable	"What is Hua Jin on the return?" → "Absorb pace with short takeback, redirect with firm face. Drill: Absorb & Redirect."
Design a practice plan	"I have 90 minutes, my BH saber is weak" → Custom 90-min plan targeting V, ROOT, SABER.
Answer "why"	"Why does 45° matter?" → "Drive/spin split, margin, penetration. The glass plane."
Quiz you	"Test me on the CORE chain" → Interactive quiz with feedback.
Simulate pressure	"Give me a break point scenario" → "30-40, ad court. Your routine. Your cue. What do you do?"

How It's Trained¶

Source	Content
Unified Tennis Handbook	All 30 chapters, full text
Visual Specs	All 150+ diagram/photo descriptions & captions
CORE System Docs	Variable definitions, equations, relationships
Diagnostic Trees	Symptom → Variable → Drill mappings
Drill Library	Every drill with setup, execution, targets
Mental Protocols	Routine, visualization, pressure QE
Physical Protocols	Fitness, periodization, injury prevention
Glossary	Q-V-ROOT-8-45-Impulse-Jin, Thính-Hóa-Phát, Hư/Thực

Access Tiers¶

Tier	Access	Cost
Free	10 questions/day, basic diagnostics	Free
Member	Unlimited, practice plans, drill videos, progress tracking	$47/mo
Coach	Unlimited + student management, custom drills, white-label	$197/mo

How to Use It Effectively¶

1. Be Specific¶

❌ "Help my forehand" ✅ "Forehand pushes wide on break points. I feel my front leg doesn't brake. What variable and drill?"

2. Give Context¶

"Club player, 3.5, righty, 2 years with the system. BH saber is stronger than FH push."

3. Ask for the Variable First¶

"Which CORE variable is most likely broken?" → Then ask for the drill.

4. Use It Between Sessions¶

Post-match: "I double faulted 3 times. Toss was low. What's the Q fix?" Pre-practice: "Design a 60-min session for BRAKE + PULSE."

Sample Conversations¶

Stroke Diagnosis¶

You: "My backhand saber floats long when I'm tired."
AI: "Long on saber = usually V (head turns) or BRAKE (chest doesn't stop side-on).
     When tired, V fails first. Chin leaves shoulder → face opens.
     Drill: 'Chin Over Shoulder' - shadow 20, then 20 feeds, freeze 3s at contact.
     Check: Film side view. Chin must stay over front shoulder through contact."

Practice Design¶

You: "90 mins. Want to fix my serve brake/pulse. Also BH hybrid."
AI: "90-Min Brake/Pulse + BH Hybrid Plan:

     0-10:  Daily 15 (ROOT, SSC, 8, F, T, Q, V)
     10-30: Serve Wall Pulse → Brake & Freeze → Live serves (20) - film 5
     30-50: BH Hybrid - Bottom hand push / Top hand guide drills (20 min)
            → Live BH rallies (10 min) - focus sync
     50-65: Combined - Serve + 1 BH hybrid (15 points)
     65-80: Pressure - Serve games, must hold brake on every serve
     80-90: Cool down - Visualization (Brake/Pulse chain walk)

     Key cue for both: 'Brake hard. Pulse one inch.'"

Mental Coaching¶

You: "I choke on break points. Eyes dart. Routine vanishes."
AI: "Break point = pressure shrinks QE window. Your routine IS the defense.

     Protocol:
     1. Walk to fence. 3 breaths. 'Release. Review. Reset. Ready.'
     2. Full 15-sec routine: Feet → Head → Hands → Breath → Eyes → Cue.
     3. Cue word: 'PARK.' (Say it at opponent contact.)
     4. Visualize: See yourself parking, holding, trusting. 10 sec.
     5. Step up. One point. Process only.

     Drill this week: 'Pressure Park' - play points, miss park = pushup.
     Target: 90% park rate under consequence."

Privacy & Data¶

Your conversations are encrypted, not shared
No video upload needed (text + description works)
Local option: Run on your device via Coachvox local (premium)
Data ownership: You own your conversation history

Roadmap¶

Feature	Timeline
Voice interface	Q1 2026
Video analysis (describe your video)	Q2 2026
Wearable integration (HRV, IMU)	Q3 2026
Multi-language (VN, ES, FR)	Q4 2026
Coach dashboard (student management)	Q1 2026

Get Started¶

Click the chat widget (bottom right)
Ask your first question
Bookmark the conversation
Return tomorrow - it remembers

The AI Coach Mantra¶

"It doesn't replace your coach. It extends your coach to 24/7. Your system. Your language. Your chain. Always available."