I just finished a cycle of sust/deca and felt like shit (extremely tired and lethargic) the whole time I was on. Could this have been cuased by the mix of short/long ester test that's in sustanon? I was also wondering if there is a certain kind of test (enanthate,cypionate, etc.) that generally doesn't cause people to be lethargic. Or could this have been caused by the deca? Any input would be appreciated because I am planning out another cycle for when I come back from winter break (college). Thanks bros!