Stiff muscles are a counterintuitive superpower of NBA athletes

For most people, the term "stiffness" has negative connotations. When you wake up in the morning complaining of a "stiff back," the remedy might include taking a hot shower, doing some yoga, swallowing aspirin, or visiting a physical therapist to loosen up. Stiffness is typically viewed as unpleasant and can limit one's physical activities.

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