So I was crazy excited to try this patch that I was given for free to test. I work out at hot works call my which consist of workouts that are done in a sauna. First off I had trouble with the patch staying placed through the entire work out. I kept having to press it down but it kept popping up. Then, I went to scan it with the app, and I found that you are not supposed to use it in such high heat. Well, that’s where I work out. I ended up choosing the highest heat they allow and got recommendations. I have no clue what the amount of sweat loss was, and there is no explanation. The app is pretty clunky to use and you can’t navigate forward or backward, so I can definitely see there needs to be improvements before I use it again. It just took a bit too long to click through everything and figure out. I think it will be good information, but it just didn’t function that well for me.