Sounds like you've been watching the nonsense lucidology videos on Youtube.
Just to inform you, the body does not "test to see if the mind is asleep"
Where exactly in the body is this testing system?
Which part of the body, independent from the brain chooses to test if the brain is alseep? the lungs? the heart? the anus?
The mind and body are one system
If you have urges to move, or aches in your body when trying to force yourself to fall asleep whilst moving... that's probably something much simpler than the lucidology silly term "roll over signal" or "urge surge"... it's what us old fashioned types like to call "being a bit uncomfortable"
It's not some test from the body, that claim contradicts basic biology and psychology.
Anyhow I've made a post to warn people about lucidology:
http://www.dreamviews.com/community/...ad.php?t=81402
I care too much about lucid dreaming to let clowns like Newport screw it up.