I am a bodybuilder and rely on my Bodyflex AM for the protein, the energy that it gives me and it’s ability to fill me up. I ran out of it just recently and I hadn’t been able to run to the store to get more. My roommate had another protein shake at home that she was taking, so I decided to try it. I noticed that I was hungry right away and that it didn’t fill me up – I didn’t feel as good as I do when I am on the Bodyflex. I had to go out and buy more Bodyflex because there was no way I was going to try the other protein stuff again. I could definitely notice the difference when I started taking my Bodyflex again.