Why to humans tend to scrunch up their face when moving a heavy weight?

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During my gym session this morning, I was thinking about why I feel a natural impulse to screw up my facial features during particularly heavy lifts.

If I consciously decided not to let my features distort I can more or less left heavy with relatively calm features but why is the natural inclination to ball up our face like a baby with wind? Does it actually provide any kind of benefit?

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Anonymous 0 Comments

The more tension you get in your body. The more your muscles respond.

This includes your face, your abdomen and your lungs

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