If you thought your late night X-rated Google searches were fueled by an innate carnal desire, think again. YouTube account ASAP Science is blowing the lid off of the porn industry by explaining why so many people form addictions to virtual arousal.

It reports that pornography makes up 25% of all search engine requests, and is the fourth most common reason for going on the Internet. While most of us may believe it's a desire driven by sexual organs, the real organ to blame is in our heads.

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ASAP Science says porn has the ability to rewire the human brain because of the relationship it has to dopamine. Long story short: Too much porn means that reality will stop turning you on.

But it's all reversible, as long as you understand the science behind the sex. Learn more in the video, above.

Video courtesy of YouTube, AsapSCIENCE; image via iStockphoto, Devonyu.