Those that get to over 40hrs amazing I got to 34 hrs on a Series 6 GPS cellular with 8% left. I do one run per day. Send one or two iMessages. Scroll through different faces two to five times. No hand-washing reminders, Siri is on. AoD is off. Bold text not sure if that matters. Background refresh apps that are on are Activity, Blood Oxygen, ECG, Heart Rate, Wallet, Weather, Workout and Zones app. Not sure if I can go over 40hrs but that would be amazing.
Good result! Out of curiosity, what watch face are you using and any 3rd party non-Apple complications?