Those of you who have read my posts know that I love the "pump". To that end I have tried many different preworkout products. Todate the best combo I have found is C-bol + Assault. The energy and pumps I get from this combo are second to none. Last night I completed my arm workout and it was actually slightly painful toward the end. Moreover , the pump lasted for several hours. I'm typically a creatine "non-responder" and I don't know if I will experience and gains in size or strength from this combo but I've only been using the product for a couple of days. However, the one side effect creatine has always had on me is frequent urination. C-bol is no different in this respect.