character: Mark Chen
topic: Fitness Levels and Heart Rate Zones
grade: 10
subject: Biology
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character: Jane Doe
topic: Understanding aerobic and anaerobic exercise
grade: 10
subject: Biology
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character: Sam Lee
topic: The effects of exercise on heart rate
grade: 10
subject: Biology
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character: Alex Kim
topic: Measuring fitness levels through heart rate monitoring
grade: 10
subject: Biology
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