Fresh said 'empty of any meaning or import'. That really helps me. Others have described it as just the Beast 'doing its job'. I translate that to myself into what little I remember of the known neuroscience - you the sheer trundling about / rearranging of synapses and in particular GABA etc (nobody ask me to explain that stuff, I just read about in numerous scientific papers!). In another translation: it's sort of like the car getting both its accelerator and brakes jammed on at once. Very machine like, as it were.