The Endurance Athlete’s Guide to VO2max and Lactate Tests

Find out all the dos and don’ts of physiological testing as we break down VO2max and lactate/ramp testing.

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DIY Lactate Testing Like a Pro

As more athletes decide to dive into do-it-yourself lactate testing, we explain how to best conduct measurements and how to avoid the most common mistakes.

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Julia Johansson

Sweat Rate, Composition, and the Importance of Fluid Balance

We detail the integral role that water and sodium play in our physiological processes, and how understanding sweat rate and composition can improve performance, recovery, and health.

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Jared Berg, MS, RD, CSCS