Physiology
What Is Lactate Threshold?
Lactate threshold is the intensity where lactate begins to accumulate faster than your body can keep it stable. Learn what it means, how it is tested, and how to use it in training.
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Clear guides to heart-rate zones, recovery, and the bigger picture.
Physiology
Lactate threshold is the intensity where lactate begins to accumulate faster than your body can keep it stable. Learn what it means, how it is tested, and how to use it in training.
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Physiology
Heart rate drift is the gradual rise in heart rate during a steady endurance session. Learn what causes it, how to measure it, and how to use it without overreacting.
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Physiology
A deep dive into the three physiological levers behind endurance performance: how much oxygen you can use, how much of that capacity you can sustain, and how efficiently you turn it into speed or power.
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Aerobic Base
Base training is working when easy efforts become more efficient, long sessions drift less, recovery improves, and your weekly training becomes more repeatable. Learn which signals matter and which ones mislead.
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Aerobic Base
Most athletes can feel early aerobic base changes in a few weeks, but a durable base usually takes months. Learn the realistic timeline, what changes first, and how to know your base is improving.
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Aerobic Base
Aerobic base training is the controlled, repeatable endurance work that builds durability below your first threshold. Learn what it is, how it works, and how to use it without turning every session into a slow grind.
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Intensity Distribution
Pyramidal training is an endurance training distribution where most work is easy, some is moderate, and the smallest amount is hard. Learn how it compares with polarized training, what the evidence says, and how to use it with heart-rate zones.
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Intensity Distribution
Polarized training is an endurance training approach that keeps most work easy, adds a small dose of hard work, and limits time in the moderate middle. Learn how it works, what the evidence says, and how to apply it with heart-rate zones.
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Intensity Distribution
Zone 3 is not bad for endurance training, but too much accidental Zone 3 can crowd out easy aerobic volume and make hard sessions worse. Learn when tempo helps and how to audit your weekly balance.
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