Decided to try half a dose in the afternoon (lifted in the morning). You can clearly feel the pump, even when you aren’t liftings which is pretty crazy. Tried it a few more times just to confirm and each time noticed a significant pump difference even when I wasn’t actively lifting, and it does the same while lifting, which feels kind of odd since it doesn’t have the stim so you really can’t feel it acting, just suddenly you realize you have a great pump. My only complain is the lid/threads, not sure if it’s the threads of the lid being oddly large or what, but haven’t managed to pour it without getting drips down the bottle afterwards. 5 star product.