I'm telling you it's like you know when your taste buds change every bunch of years and all of a sudden something tastes a little different or you like or now dislike something.

I had a love affair with coffee. Now I barley get through a cup without not caring for it anymore. Maybe it's less the caffeine and more so the taste.

As for my preworkout its probably the pumps and blood flow, heart rate ect increase with the added gear as opposed to the caffeine..?