Hello Pacman1001,
Thanks for reaching out to Apple Support Communities. Upon review of your post, it seems that you have an issue with your iPhone not tracking activity correctly. We can see why you’d want this taken care of, so let us help from here! Let’s start by taking the following steps, which may help with this unexpected behavior: restart your iPhone, make sure it is up to date and close the Health/Fitness app and reopen it.
1. Restart your iPhone
2. Update your iPhone, iPad, or iPod touch (You mentioned being updated, but make sure it is the most recent version by following these steps)
3. Close an app on your iPhone or iPod touch
Additionally, the information in this article may help: Manage Health data on your iPhone, iPod touch, or Apple Watch.
Please let us know if you have follow up questions, so we can continue assisting. Take care!