As they say as we age things change. So I ran a little experiment. Was running my basic cycle with 150mgs of masterone taken every 4 days. Blood pressure jumped up into the dangerous zone and sleep became hindered. Then removed all masterone and added more test to make up the milligram difference. Blood pressure within 4 days normalized and so did sleep. I may reintroduce it again but from another supplier. There may either be some sort of contaminant in this batch or I am straight up reacting to it in a new way...