your more likely to have issues with LOW test.. many in those studies are already unhealthy... test is needed for many functions in body, not just muscle.
using primo or other aas shut DOWN your natty production of test, this is bad. so the question is not primo or test. its test solo or test and primo...... I rec test only first go around.... with an AI during cycle and 4-5 week pct of clomid and tamoc ed