The whole time on = time off + pct I know is the safest way to go about not permanently shutting down your natural test permanently. I know it's a yoyo in terms of gaining size. My mate does 10 weeks on 4 weeks pct then repeat n has done it forever, his natural test levels are still normal. I'm wondering if anyone's done the same n how things worked out for you??? Whether your on TRT coz of it or you went back to normal? I know everyones different