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Question: According to the Physical Activity Guidelines for Americans, how much physical activity should teens get every day? Explain how to measure the intensity of a physical activity. What is the target heart rate for a 15-year-old engaging in moderate-intensity physical activity? What weight should you select when using free weights or a weight machine? What is the purpose of engaging in aerobic activity before stretching? Extremely short answers only
- **Teens**: 60 minutes daily. - **Intensity**: Talk test or heart rate. - **Target heart rate**: 103-146 bpm. - **Weight selection**: Challenging but liftable for 8-12 reps. - **Purpose**: Warm muscles, prevent injury.
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