If your overall function would be better at lower levels then maybe it's not appropriate to say that 1,200 ng/dL is physiological just because some very small segment of the population has those levels. And almost all guys who naturally have such high levels tend to have rather high SHBG, so chances are we're still talking about supraphysiological free testosterone. It's that "more is better" philosophy, which probably only works if you're limiting the criteria. That is, if you want to maximize athleticism at the expense of all else, for example.Not many on this site are taking TRT to sit at 500 ng/dL. Most are trying to get into that 1% range of 1200 ng/dL. If any % of the population is observed to possess 1200 ng/dL then pushing TT while on TRT to those levels would still be considered physiological levels.