If you actually sit and contemplate the fact that your body is composed of dead star material and at a quantum level is mostly space, what does that do for you. Try it. Set a timer for something doable like 3 minutes.
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Got some fairly standard pulsating sort of consciousness distortions (like swaying on a boat, but for all of awareness).
Also really strong sense of nausea.
Was fun. Gonna try it tomorrow when I'm better rested as well!