Hey fellas new to the group here, Im looking to learn as much as I can. Im 40 years old 6’4" 180lbs I have had a slim frame all my life Im not looking to bulk up just want to be stronger then I’am. Had my test levels checked don’t really understand them to much but the doctors say they are normal. Total testosterone 527 ng/dl, free testosterone 7.38 ng/dl. Any help understanding what the difference is would be appreciated thanks for reading!