Question 1

Is 220−age accurate for everyone?

Accepted Answer

It is a population estimate. Individual max HR can differ substantially.

Question 2

Should I ignore how I feel?

Accepted Answer

No — pair zones with perceived exertion, especially if medicated or returning from illness.

Question 3

Safe for beginners?

Accepted Answer

Start conservatively and get medical clearance if you have cardiovascular risks.

Target Heart Rate Calculator

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