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you need to draw an extra horizontal line between 25-30min (same level as in B. ie heartbeat rate at rest)

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How would you draw the line graph from 20mins to 30mins ? (A), (B), (C) or (D) ?

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Thanks for your guidance.

Qns 32(b) : Suggest an activity that Mandy was doing during period B

Given Ans for 32(b)  : sleeping

Is there any difference between heartbeat at rest when awake and heartbeat while sleeping ?

My initial thoughts were as per above graph if there’s a difference in heartbeat at rest when awake and asleep.

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