Siri + Health

Alongside the many improvements to the Apple Watch, Apple also confirmed that you’ll be able to ask Siri for specific health information without taking out your iPhone.
For instance, you can ask Siri what your average heart rate is or how long you slept last night. Thanks to the S9 chip on the Apple Watch Series 9 and the Ultra 2, Siri will handle all these requests with the Watch instead of sending them to your iPhone and waiting for a response.