I was debating on taking clen for my first cycle. Ive done research and im looking for feedback from past or current users. Im looking at the questions like, what should i take with clen? is there anything i should be worried about? Does the diet have to be strict when on clen? Would taking a preworkout while in clen effect my heart rate drastically? What dosage should i be taking? any feedback would help. I would appreciate it.