/u/lod254's posts in /r/askscience
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Why can the hair on your head grow many feet in length but other body hair such as arm and leg hair only an inch or two?
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Why do our cardio abilities decay so quickly? If I don't run for 3mo it feels like I'm starting over. Everything aches. It hurts to breathe. But I maintain most of my strength.
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Why aren't all seat except the drivers seat backwards facing in passenger vehicles? It seems like that would be safer.
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