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s2/e21 Muscle Cramps (What We Do & Don't Know) with Coach Elisabeth

The Running Explained Podcast

CHAPTER

How Does Your Muscle Spindle Know When It's Time to Contract?

How does the muscle know it's time to contract? Ah, this is actually controlled by a couple different little tectors. One of those is called the muscle spindle, and this is a stretch detector. The other detector here is called the golgy tendon organ. You can think of that as the equal and opposite companion to the muscle spindles job.

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