The yearner is a lot like the log, except we feel like they've addressed the issue of potential 'dead arm'. Imagine the log, but with outstretched arms, as though the sleeper is yearning for something. People who sleep yearner-style have quite similar characteristics to those who choose the log, except the yearner is not quite as gullible, which is always a good thing.
As they're a lot less gullible, yearners can be a bit more cynical than logs and they're often suspicious when something sounds too good to be true. But they still have a very friendly and open nature, which seems like the best of both worlds. Yearners often set very high expectations for themselves and others, which is why they can often be suspicious of anyone claiming to be the best at something.