2. Log

Although the log is another side sleeping position, it differs quite a bit from the fetal position. While assuming a log position, a sleeper has both their arms and legs extended, so their body is straight like a log. Surveys suggest the log as being a common position, while other research suggests that a true log side sleeping position is uncommon. This study found that many sleepers extend both legs while sleeping on their sides, but most keep at least one arm folded.

Sleep scientist Chris Idzikowski claims that preferring a log position suggests that a person is sociable and interacts with others easily. While these are attractive traits, he warns that this openness and willingness to trust could make them gullible.