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Birdie’s BirdHouse 💕🐦💕

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Welcome to Birdie’s BirdHouse! Birdie and the gang just want to help shape a more healthy and positive view of the world and the people who inhabit it ❤️

Humans evolved flexible arches to walk upright | Popular Science

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A rigid arch without recoil caused the foot to prematurely leave the ground, likely decreasing the efficiency of the calf muscle.
— Read on www.popsci.com/health/foot-arch-walking-human-evolution/

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