/u/DignityThief80's posts
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If every exercise machine in every gym in a city were adapted so that the work done on them could generate electricity, would that make a noticable difference in the use of electricity in that city?
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How come when I go 'HAAAAA' and blow air out of my mouth, its hotter air than when I just blow air out of pursed lips? The air comes from the same place (my lungs), doesnt it?
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