What makes people start rocking when kept in isolation with no stimuli for a long period of time?

I must not sleep or the clowns will eat me.


I must not sleep or the clowns will eat me.


I must not sleep or the clowns will eat me.


I must not sleep or the clowns will eat me.


I must not sleep or the clowns will eat me.


I must not sleep or the clowns will eat me.


I must not sleep or the clowns will eat me.


I must not sleep or the clowns will eat me.


I must not sleep or the clowns will eat me.


I must not sleep or the clowns will eat me.


I must not sleep or the clowns will eat me.


I must not sleep or the clowns will eat me.


I must not sleep or the clowns will eat me.


I must not sleep or the clowns will eat me.


I must not sleep or the clowns will eat me.

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