workout-explainer

name: workout-explainer description: Translates planned workouts into execution cues, purpose explanations, and common mistakes to avoid. Use before workouts when user asks "what should I do?" or "how do I run this session?" with beginner-friendly guidance. metadata: short-description: Explains workouts with cues, intent, and safe substitutions. agent: cursor

When Cursor should use this skill

• When the user opens a workout detail modal or asks "how do I do this workout?"
• During chat if the user needs clarifications or substitutions
• When user wants to understand workout purpose or execution details
• When implementing workout guidance features or debugging workout explanations

Invocation guidance

1. Provide the Workout object and user capability context (experience, recent runs).
2. Return execution cues, purpose, common mistakes, and two substitutions.
3. Keep guidance concise (<120 words) and beginner-friendly when experience is low.
4. Include specific pace/HR targets if available.
5. Tailor complexity to user experience level.

Input schema

See references/input-schema.json.

Output schema

See references/output-schema.json.

Integration points

• UI:
  • Workout detail modal
  • Plan screen tooltips
  • Pre-run guidance screen
• Chat: Served through v0/app/api/chat/route.ts with workout-explainer intent
• Database: Workout details from workouts table

Safety & guardrails

• If workout intensity mismatches user level, propose easier substitution and emit SafetyFlag.
• No medical advice; advise stopping on pain/dizziness.
• If weather is extreme, suggest indoor or modified alternatives.
• Always provide at least one easier substitution option.
• Emphasize form over speed for beginners.

Workout type patterns

Easy Run

Purpose: Build aerobic base, recovery, fat adaptation Execution: Conversational pace, relaxed form, low HR (60-75% max) Cues:

• "Should be able to chat comfortably"
• "Nose breathing if possible"
• "Slow is the goal" Mistakes to avoid:
• Starting too fast
• Trying to keep up with faster runners
• Skipping recovery runs Substitutions:
• Shorten duration by 20-30%
• Walk/run intervals
• Indoor treadmill at controlled pace

Tempo Run

Purpose: Lactate threshold training, race pace simulation Execution: Comfortably hard, controlled breathing, HR 75-85% max Cues:

• "Can speak short sentences"
• "Controlled breathing rhythm"
• "Sustainable effort" Mistakes to avoid:
• Going too hard too early
• Poor pacing (uneven splits)
• Not warming up properly Substitutions:
• Fartlek with tempo segments
• Cruise intervals (5min tempo, 2min easy, repeat)
• Sustained hill repeats

Interval Workout

Purpose: VO2max improvement, speed development, running economy Execution: Hard effort with recovery periods, HR 85-95% max Cues:

• "Focus on smooth acceleration"
• "Full recovery between reps"
• "Maintain form even when tired" Mistakes to avoid:
• Inadequate warm-up
• Too fast on first intervals
• Skipping recovery periods Substitutions:
• Reduce interval count by 30-50%
• Extend recovery periods
• Hill repeats (lower impact)

Long Run

Purpose: Endurance building, mental toughness, fat adaptation Execution: Easy-moderate pace, sustained effort, HR 65-80% max Cues:

• "Start conservatively"
• "Fuel every 45-60 minutes"
• "Stay relaxed and efficient" Mistakes to avoid:
• Starting too fast
• Skipping nutrition/hydration
• Running too hard (should be easy-moderate) Substitutions:
• Break into two shorter runs
• Walk breaks every 10 minutes
• Reduce distance by 20-30%

Rest Day

Purpose: Physical recovery, adaptation, injury prevention Execution: No running, active recovery optional Cues:

• "Rest is training too"
• "Light stretching or yoga okay"
• "Focus on sleep and nutrition" Mistakes to avoid:
• "Making up" missed runs
• Intense cross-training
• Feeling guilty about resting Substitutions:
• Gentle walk (20-30 minutes)
• Swimming or cycling (very easy)
• Yoga or stretching routine

Experience-level adaptations

Beginner

• Simpler language, fewer technical terms
• More encouragement and reassurance
• Focus on completion over performance
• Emphasize safety and form
• Suggest walk breaks as normal, not failure

Intermediate

• Include pace/HR targets
• Technical cues for efficiency
• Connection to goal race pace
• Progressive challenge suggestions

Advanced

• Detailed physiological explanations
• Advanced pacing strategies
• Race-specific adaptations
• Performance optimization tips

Telemetry

• Emit ai_skill_invoked with:
  • workout_type
  • experience
  • safety_flags
  • substitution_provided (boolean)
  • latency_ms

Common edge cases

• Bad weather: Provide indoor alternatives
• Injury recovery: Suggest modified versions
• No equipment: Alternatives without treadmill/track
• Time constraints: Shortened versions that maintain workout intent
• Confidence issues: Extra encouragement, break into smaller chunks

Testing considerations

• Test with each workout type
• Verify beginner vs advanced language differences
• Test substitution appropriateness
• Validate cue clarity and actionability
• Test SafetyFlag emission for mismatch scenarios
• Verify purpose explanation accuracy