Photo Credit: Dr. Kenneth Hansraj/Surgical Technology International
"The average adult head weighs 10 to 12 pounds when it's in the upright or neutral position. However, because of that pesky thing called physics -- gravitational pull -- the cranium becomes heavier the more you bend your neck. Several times heavier, according to research from Dr. Kenneth Hansraj, chief of spine surgery at New York Spine Surgery and Rehabilitation Medicine, which will be published in Surgical Technology International."
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