fitness

name	fitness
description	Record exercise, manage fitness goals, generate workout prescriptions, and analyze fitness trends. Use when user wants to log workouts, track progress, or get exercise recommendations.

Exercise and Fitness Management Skill

Record exercise, manage fitness goals, generate workout prescriptions, and analyze fitness trends.

Medical Safety Disclaimer

Important: The exercise recommendations and analysis provided by this system are for reference only and do not constitute medical advice or specific exercise prescriptions.

Cannot Do:

• Do not provide specific exercise prescriptions - exercise prescriptions must be formulated by doctors or exercise specialists
• Do not handle exercise injuries - injuries require medical attention
• Do not assess cardiovascular risk - medical evaluation required before exercise
• Do not replace professional guidance - complex exercises require professional coach guidance

Can Do:

• Exercise data recording and analysis
• Fitness goal management
• Exercise trend identification
• General exercise recommendations
• Reference recommendations based on health conditions

Core Flow

User Input → Identify Operation Type → [record] Parse Exercise Info → Save Record
                              ↓
                         [history/stats] Read Data → Display Report
                              ↓
                         [goal] Parse Goal → Update Goal → Save
                              ↓
                         [analysis] Read Data → Analyze Trends → Display Results
                              ↓
                         [prescription] Based on Health Status → Provide Reference Recommendations

Step 1: Parse User Input

Operation Type Recognition

Input Keywords	Operation Type
record	record - Log exercise
history	history - View history records
stats	stats - Exercise statistical analysis
goal	goal - Goal management
analysis	analysis - Exercise analysis
prescription	prescription - Exercise prescription recommendations
precautions	precautions - Precautions

Exercise Type Recognition

Aerobic Exercise

Keywords	Type
running	running
walking	walking
cycling	cycling
swimming	swimming
jump_rope	jump_rope
aerobics	aerobics
elliptical	elliptical
rowing	rowing

Strength Training

Keywords	Type
strength	strength
calisthenics	calisthenics
machine_weights	machine_weights
free_weights	free_weights
resistance_bands	resistance_bands

Ball Sports

Keywords	Type
basketball	basketball
soccer	soccer
badminton	badminton
ping_pong	ping_pong
tennis	tennis
volleyball	volleyball

Other Exercises

Keywords	Type
yoga	yoga
pilates	pilates
tai_chi	tai_chi
dance	dance
hiking	hiking
skiing	skiing

Intensity Recognition

Input	level	rpe
low	low	9-11
moderate	moderate	12-14
high	high	15-17
rpe 13	moderate	13
heart_rate 145, hr 145	moderate	~13

Step 2: Parse Exercise Parameters

Duration Recognition

• "30 minutes" → 30
• "1 hour" → 60
• "90 minutes" → 90

Distance Recognition

• "5km" → 5.0
• "3 km" → 3.0
• "1000m" → 1.0 |

Pace Recognition

• "6min_per_km" → "6:00"
• "5'30"" → "5:30"

Heart Rate Recognition

• "heart_rate 145" → {avg: 145}
• "hr 145 max 165" → {avg: 145, max: 165}

Calorie Recognition

• "calories 300" → 300
• "burned 400 kcal" → 400 |

Step 3: Generate JSON

Exercise Record Data Structure

{
  "date": "2025-06-20",
  "time": "07:00",
  "type": "running",
  "duration_minutes": 30,
  "intensity": {
    "level": "moderate",
    "rpe": 13
  },
  "heart_rate": {
    "avg": 145,
    "max": 165,
    "min": 120
  },
  "distance_km": 5.0,
  "pace_min_per_km": "6:00",
  "calories_burned": 300,
  "how_felt": "good",
  "notes": "Felt comfortable, steady pace"
}

Fitness Goal Data Structure

{
  "goal_id": "goal_20250101",
  "category": "weight_loss",
  "title": "Lose 5 kg",
  "start_date": "2025-01-01",
  "target_date": "2025-06-30",
  "baseline_value": 75.0,
  "current_value": 70.5,
  "target_value": 70.0,
  "unit": "kg",
  "progress": 90,
  "status": "on_track"
}

Step 4: Save Data

1. Read data/fitness-tracker.json
2. Update corresponding record sections
3. Write back to file

FITT Principle Reference

Frequency（频率）

• Exercise days per week
• General recommendation: 3-5 days/week

Intensity（强度）

• Target heart rate zone = (220 - age) × 60-80%
• RPE 12-16（somewhat hard to hard）
• MET value reference

Time（时间）

• Warm-up: 5-10 minutes
• Main exercise: 20-60 minutes
• Cool-down: 5-10 minutes

Type（类型）

• Aerobic exercise: running, swimming, cycling, etc.
• Strength training: bodyweight, machines, free weights
• Flexibility training: stretching, yoga
• Balance training: tai chi, single-leg stand

Goal Types

Type	Description	Example
weight_loss	Weight loss goal	Lose 5 kg
muscle_gain	Muscle gain goal	Gain 2 kg muscle
endurance	Endurance goal	Run 5K under 30 minutes
health	Health goal	Lower resting heart rate
habit	Habit formation	Exercise 4 days per week

For more examples, see examples.md.