Let's face it, the most neck muscle exercise most computer geeks are likely to get is by checking out a pretty lady walking past the office or street! Unless you live or work in an area that has a lot of talent around, that is unlikely to be enough neck exercise for the HE-500. Luckily I live in South Africa!
The best neck muscle exercise though is go-karting. Used to have the most awesome go-kart track in the Netherlands that spanned over two levels and included a long banked turn which was a real neck killer. You'd be able wear the HE-500 all day without breaking a sweat after a couple of laps there.