Question: Why do some people snore, sleep-talk, sleep-sing and sleep-walk?

Sean Murphy answered on 21 Mar 2012:

Snoring occurs when people have too much tissue at the back of their throat, the palate, uvula and tonsils flap against each other and the vibrations this causes produces the noisy sounds of snoring.Snoring can also occur when there is an obstruction blocking the air passageway at the back of the throat.

I’ve never hear of sleep singing (lol) but my friend and his sister used to sleep argue. Sleep talk occurs in some people may be because of stress, anxiety, having less sleep, unresolved issues, eating in excess exactly before going to bed or it can be due to some unfinished task that has remained in our subconscious.

Sleepwalking is more commonly experienced in people with high levels of stress, anxiety or other psychological factors and in people with genetic factors (family history) or sometimes a combination of both. A majority of people move their legs while sleeping; however, sleepwalking occurs when both legs move in synchronization, which is much less common.