Home > Human Body > April 21, 2014 Human Body We have been infected by so many viruses that 8% of our DNA is made up of them. Share this:FacebookTwitterGoogle Tags:DNA Related Posts Suppressing a sneeze can rupture your blood vessels and can cause serious neck injuries. A hug that lasts for 20 seconds releases oxytocin Sex and weed help in preventing migraines. Chewing gum makes your brain run more efficiently and more effectively. The human brain (mass-tissue) does not have pain receptors thus brain surgery is performed while people are awake. You can get a brain infection from squeezing pimples in this area of your face. Lack of sleep can lead to an increased desire for sex, depression and substance abuse. Hearing your name being called when no one has actually called your name is a likely sign of a healthy mind. Hugging is a good medicine A condition called False Awakening occurs when you’re dreaming that you’re woken up, but still are in deep sleep.