People who favor the freefall position are enthusiastic and confident, but their sleep style also indicates that they're not very thick-skinned when it comes to hearing criticism about themselves. You would never pick it, due to their sociable and excitable nature, but they will take things personally, even if it was only intended as constructive criticism or an offer of help.
This is a slightly confusing combination of traits, especially as freefallers are known to be risk takers. However, they also get anxious when they don't have control over a situation, which does align well with not being able to take criticism lightly. But like we said, it's not all bad if you're friends with a freefall sleeper - their playful spirit and ability to make any event or social occasion fun is well worth the effort.