Arghya,

Sleeping on your back does increase the likeliness of SP.

Lauren,

You could try seeing a Doctor but in my experience they haven't always helped. SP is quite natural and it doesn't really harm in physically.

Michelle,

If you are scared of it, then chances are your body won't go into it anyway. I found that I really had to believe and want it for it to happen.

Dan,

Try wiggling a finger or tow next time. This may help the rest of your body break out of it.

Fizzz