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Emotional barriers can mean many things It can be a harmful block that stops people from accepting help (but that's already been covered.) Or It could be a normal wariness and distrust in strangers that you have to cross in order to make freinds, personally I take my sweet time coming over to someone.  
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When your ill you get a white/yellow substance on your tongue, which is discarded cells, since more of your cells die when you're ill, but if your tongue itself is actually white, I guess it's because he blood-flow is directed away from your head but if that happens you should notice your cheeks are pale as … Read more
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A condition during sex caused by the accumilation of blood inside the genitals for too long... During erection, the penis and testicles fill with blood, because a human body isn't letting the blood drain away as normal, the blood loses oxygen content which make the tissues produce lactic acid which causes the pain.   There … Read more