Running articles
Dig deeper into running science
Longer-form articles that go beyond the basics — explore the science behind your metrics and learn how to apply it.
What Is VO2max — and Why It Matters for Runners
VO2max measures your body's maximum rate of oxygen consumption during intense exercise. Here's what every runner needs to know.
Read articleWhat Is Lactate Threshold and Why Does It Matter for Runners?
More than VO2Max, lactate threshold determines how fast you can race a 10K or half marathon — here is what it is and how to move it.
Read articleWhy Most of Your Running Should Be Easy
Most recreational runners train too hard on their easy days and not hard enough on their hard days. Here is why easy really means easy — and how to fix it.
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