Can someone explain scientificly why u have to run the test higher than the other drugs in the cycle. All i seem to hear from the bros on this site is for example if u running deca at 500 u need to run test at 600. I understand why u need to take test with the cycles but why do u need to take over the other compounds if u already takin in more test than ur body produces. The only reason i ask is cause u know a lot of times people repeat wat other people said. If vets could shed some light on this matter it would b greatly apprieated