Awesome chart. As a guy who wants to be in more normal ranges, at least at first (primarily using this as TRT rather than for bodybuilding), is there a reliable age-graded reference? I've seen a few things floating around the internet, but the ranges for guys in their 20s look way low to what I see implied around here as normal. I've gotten some real shit from doctors in the past for testing on the low end of normal T, but my understanding is their standardized T ranges have a lower end set for guys in their 50s/60s and up.