THE RUNNING EFFECT PODCAST cover image

The #1 Running Scientist Who Helped Eliud Kipchoge Break 2 Hours In The Marathon Shares What Actually Makes Runners Faster — And What Most Are Getting Wrong

THE RUNNING EFFECT PODCAST

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Wrist HR Reliability and Chest Straps

Brad says optical wrist HR has improved but is artifact-prone; chest straps remain more reliable for training decisions.

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