Phases of Fitness
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FitnessWellnessSelf-Improvement
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Fitness
Wellness
Self-Improvement
The article 'Phases of Fitness' discusses the different stages of a fitness journey, sparking a low-key discussion on the HN community about personal fitness experiences and goals.
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Oct 15, 2025 at 11:59 PM EDT
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Whilst those heart rate zones are helpful, they're usually inaccurate and a heart rate max run test would be better. Using the "more accurate" formula mine was well under my max HR in the real world.
A minor change would be that in phase 3, you would likely be able to sustain zone 2 for longer, your zone 3 and 4 will have become faster.
Also I've never done a heart rate max run test, but good to add!