One of the several exercise I practiced daily was “reverse memory”. Before sleep each night, I lay on my back, relaxed my entire body, and with my eyes closed I retraced every activity of the day, starting with the present moment on the bed … like a mental movie but in reverse. So I visualized myself rising from my back, sitting up on the bed’s edge, putting on my socks and shoes, my pants, my shirt, walking backwards to the bathroom, having the door open, then close as I reverse-walk across the bathroom floor to the toilet, flush it, idly watch the silvery stream I produce, tuck my member back, do the thing with the zipper, et cetera.