If you're young and is producing normal levels of natural Test, I would recommend you cycle. If you have low Test and is on TRT, I'd recommend cruise/blast. The clarify, cruise is TRT dose. I'm just not convinced that subjecting your liver to cruise dose of 300mg/wk is a good thing. It just seems like a lot of Test when a healthy 25 year old male product about 70mg/wk of natural Test. For longevity and health, I take the philosophy of take the minimum to achieve your goal.