Question 1

How are heart rate zones calculated?

Accepted Answer

Max heart rate is estimated as 220 minus your age. From there, zones are set as percentages of that max: zone 1 (50-60%) for light, zone 2 (60-70%) moderate becoming fat-burning certified zone, zones 3-5 are progressively harder.

Question 2

Is the 220-minus-age formula accurate?

Accepted Answer

It is a population average with wide individual variation. Most people will be within about 10-15 beats of the estimate. For more precise zones, a stress cardiogram or a well-conducted 5k field test give a personal max heart rate you can use instead.

Question 3

Which zone should I train in?

Accepted Answer

Zone 2 (60-70% max heart rate) for base endurance and fat-burning with gentler recovery. Zone 3 and 4 for building cardiovascular stamina necessary for sports. Zone 5 pushes your anaerobic threshold for sprints. Mix all zones for balanced training.

Question 4

At what heart rate do I burn the most fat?

Accepted Answer

A lower total contribution comes from fat at higher intensities, but more total calories are burned overall, so the fat-oxidation sweet spot is usually moderate zone 2. However, the takeaway for weight loss and fitness goals is: calories matter relative to maintenance.

Question 5

Is a higher resting heart rate bad?

Accepted Answer

A lower resting heart rate usually reflects a stronger, more efficient heart, but it varies naturally from person to person. Temporary elevation may reflect stress, illness, caffeine, or dehydration. Trends over time matter more than single-day readings.

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