Take my picture when I am asleep

The first line had been on my mind for ages... Yet another thought on the nature of sleep.

Take my picture when I am asleep,
When my face is devoid of thought,
And my body - a useless heap,
Tired, resting, immobile, caught.

Take my picture, so when I awake
I would no longer have to ask,
What I look like when I don't fake,
When without my social mask.

Take my picture, and what you will see
Is the body without mind,
Quiet, placid, awareness-free,
Peaceful, neutral and self-defined.