you have a power meter and you have a GPS so just these two combined for example speed and power perfectly like we we talked about last time when you were out riding 200 wats constant and basically you see you getting faster so you you have this direct bio feedback because you as long as you ride enough you will basically start to get a very good feeling for when you sit at a certain power and you start do different things sudden you creep up like half a kilometer power or one like for person when it start start cycling or they cyc a little bit like for them they it doesn't become interesting enough yet because there are other things that is basically more challenging for them to to master but for people that do a lot of biking like yourself it it's it's it's it's where you exactly start to pay let's say attention to those let's say even half a kilometer per hour maybe even you're getting below that as well where you start to really pay attention to this