Lake James is a glacial lake located in the northeastern corner of the state of Indiana. The lake occupies an area west of Interstate highway 69 in Indiana's Steuben County, which borders Michigan and Ohio. The city of Angola is located about 3 miles (5 km) southeast of the lake's southern tip.
May-June 2006. The weight of the human head is 8-12 pounds while the average weight of the helmet used in our sample is 2.7 pounds.. 3.6kg-5.4kg. Item from Budget Request 2001 (The BBC -- Boy Band Collider) . Ryerson Astronomical Society. May-June 2006.
Chris Beckman gave a great explanation of how that is possible. I'd be a little wary of the 11 pounds estimate. For example Human head article on Wikipedia puts that figure down to 5-11 lbs. So the neck is capable of bearing quite a lot more than that anyways !!!