You walk up and down stairs.

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Take a brisk walk up and down the stairs.

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But every morning for the rest of her natural life, she'll wake up, walk down the stairs and find herself staring at two hulking leviathans.

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There are high-rise apartment buildings with sick or elderly residents trapped in their freezing homes without enough food, water or medication who are unable to walk up and down several or dozens of flights of stairs to get what they need.

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