[jerry1979]

But taking drugs also affects physiological things such as breathing, heart rate, salivation, sweat, etc. All of those things are tied to physical material that starts outside the body that our physical bodies manage thanks to evolutionary selection. We manage oxygen with breathing/heart rate, water for salivation and sweat, etc. The fact that the physical body and evolution also manage consciousness should probably be evidence that consciousness exists outside the body just like oxygen and water.