my question is......if a person uses say test for a longer period of time does your body become almost used to the product and receptors not take the test anymore? example....say a person ran 900 mg of test (say test e for the example) for 15 weeks or longer. then does not wait the proper period of time between starting say another 15 week. of course this is a spacific question and i know pct and the wait are a must but simply a questioin. also if you added a second product like deca or tren in the second 15 week would that make a differnce cuz you added a different product. for the record this is only a question and this is not going on or about anyone. thanks in advance