Testosterone: A Detailed Briefing Key Takeaways: Important Ideas and Facts: Biological Effects: Behavioral Correlations: Biological Activity: Production and Regulation: Additional Points:

T3 Study Guide: Key Terms T3 (Triiodothyronine)– The most potent thyroid hormone, responsible for regulating metabolism, growth, and development. T4 (Thyroxine)– A prohormone that converts to the active T3; less potent but more abundant than T3. TSH (Thyroid Stimulating Hormone)– A hormone released by the pituitary gland that signals the

But all hope for training hard isn’t lost. Just because our systems have built-in restrictor plates that put a soft ceiling on our physical abilities doesn’t mean that we have to accept those limitations at face value. In fact, we don’t have to outsmart biology in order to train harder