Final answer:
To find your resting heart rate, you should find your pulse, count the number of heartbeats in 10 seconds, and multiply by 6. This method will give you an estimate of your heart rate in beats per minute.
Step-by-step explanation:
Finding Your Resting Heart Rate (RHR)
To find your resting heart rate (RHR), the correct approach is to measure your pulse and count the number of heartbeats. Option 4 is the accurate method: Find your pulse, count the number of heartbeats in 10 seconds, multiply by 6. This is because when you measure how many beats occur in 10 seconds and then multiply that number by 6, you get an estimate of how many times your heart beats in one minute, giving you your resting heart rate in beats per minute (bpm).
The first option, which involves subtracting your age from 220, is actually used to estimate your maximum heart rate, not your resting heart rate. The third option, subtracting your age from systolic blood pressure, does not give you your RHR either. Placing your palm on your chest as described in option 2 is less accurate because it's difficult to feel heartbeats this way, and it's far more reliable to locate your pulse on your wrist or neck.
Abnormal heart rates, such as bradycardia (below 60 bpm) or tachycardia (above 100 bpm), can indicate heart disorders. However, it's important to note that highly trained athletes might have a resting heart rate below 60 bpm without any health concerns.