While a lot of these tendencies sound a little negative, there is a lot of value in people who keep to themselves and don't like making a big deal of things. They're calming to be around and will never want or expect you to throw them a big surprise birthday party. Having said that, they can be tough taskmasters when they do expect something from you.
You would think the soldier position would be good for spinal alignment, but apparently, you're better off in the log position if you want to do the best thing for your back. The soldier can also be really bad for those suffering with sleep apnea and other respiratory problems. An unusually high number of soldier sleepers snore, due to the position being one of the least conducive to good breathing.