strong men create productivity
productivity create abundance
abundance create weak men
weak men create money supply
money supply create low testosterone
low testosterone create hard times
hard times create strong men
weak men create hard m2
Yes, hmmm indeed. Testosterone bioassays were not developed until the 1960s and up until the past 25 years, testsosterone levels were not routinely checked on men unless there were symptoms
But cool chart tho
this is likely to do with diets and lifestyle.
Sit in an office all day? Eat processed foods?
You probably have low T.
Eat some vegetables and go outside and touch the grass, get natural vitamin D from sunlight, go for an actual run and get your heartrate up.
Your testosterone levels will go back to normal.