I have yet to see any clinical studies that suggest proviron frees up bound test. Yes I know it is widely accepted among body builders that it has a higher affinity to bind with SHBG I would just like to see the studies that conclude this. I only ask because I have looked in the past thinking the above was true but I am beginning to think its another urban AAS legend. I remember buying cycles in the 80's and I was told the same thing by my supplier now I'm thinking he just wanted to unload some proviron