I sat down with scientist David Kingsley to go through his actual blood work from his latest self experiment. His total testosterone increased from 749 to 960, while free testosterone also climbed significantly and SHBG barely changed. But the numbers are only part of it. We also talked about how he felt, energy in the gym, mood, sex drive, fertility markers, estradiol, IGF 1, and why tracking blood work matters when you experiment with your hormones. This is not a transformation based on somebody guessing how they feel. We actually have the before and after labs. Watch the full experiment: https://youtu.be/UDHRbra1r4k?si=cuvHYis9vq5BXA4N What result surprised you the most?