I’m going to be an unwilling subject myself. I have ADHD and normally get prescribed Adderall which is a very high powered stimulant. While I’m out of school, I’ve tried using GABA which releases HGH at a very high rate. Starting the 30th, I’ll be back on Adderall so I won’t flunk out of school. During my time on GABA, I have plateaued. I’m also on Finasteride so I’m not quite sure which has stopped my gains or maybe a combination of both or just a natural progression.
I will find out when I start using Adderall again. Even on Finasteride, I should begin to gain at a good clip once again. I’m not recommending anyone go get speed!!!!
Just a thought and Prickle is right, long duration aerobic exercises will increase cortisol production.