“The child” [3/3] [1/7]

Atmosphere.
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You know, this is random. But I noticed something that might not be so visible within the drawing itself, as it was more noticeable alongside other things I saw him do. It is also, a rather small detail, but I am here for such things.
When I drew him here as I saw him, I randomly thought: “Your posture tells me you seem very familiar with sleeping sitting down or generally sleeping in unusual ways.”. Because people who normally sleep, well, normally, tend to have a hard time sleeping in otherwise uncomfortable or uncommon positions. Waking up often or trying to find a more comfortable position. However he never really exhibited any of that, now that I look at it in full. And I just started to wonder, how familiar are you with not being able to sleep normally for one reason or another.
I figure it was one of those things he learned/got accustomed to over time.