I struggle with getting quality sleep, so I've been on the hunt for a pre that doesn't have caffeine in it. When I tried the Boba Protein for the first time, I loved it and was so thrilled to see the non-stim pre available, too! The flavor is amazing, not too sweet, and I still get that beloved tingle that makes me want to get up and work out. I do hope that there will be one without artficial sugar in it in the future, though! Still way better than most on the market.