Collect health and fitness information in Health on iPod touch
The Health app 
can track your daily footsteps and the flights of stairs you climb. You can manually add other information like body weight and caffeine intake, and track additional data with other apps (such as nutrition and fitness apps) and devices that are compatible with Health (such as Apple Watch, AirPods, weight scales, and blood pressure monitors, all sold separately).
Manually add information to a health category
Tap Browse at the bottom right to display the Health Categories screen, then do one of the following:
Tap a category. (To see all categories, scroll down.)
Tap the search field, then type the name of a category (such as body measurements) or a specific type of data (such as weight).
If you don’t see the Health Categories screen, tap Browse again at the bottom right.
Tap
for the data you want to update.Tap Add Data at the top-right corner of the screen.
Add your information, then tap Add or Done in the top-right corner of the screen.
Collect information from headphones
After you connect EarPods, AirPods, and other compatible headphones to your iPod touch, their audio levels are automatically sent to Health. With this data, you can do the following:
Get a notification and have the volume automatically turned down if you listen to audio from your headphones for long enough at a volume that could affect your hearing.
View the audio levels from your headphones over time.
Collect information from apps and other devices
From an app that you download from the App Store: As you set up the app, you can allow it to share data with Health.
From another device: Follow the setup instructions for the device.
If it’s a Bluetooth device, you need to pair it with iPod touch. Follow the instructions that came with the device to put it in discovery mode, go to Settings
> Bluetooth, turn on Bluetooth, then tap the name of the device.
Note: iPod touch isn’t a medical device. See Important safety information for iPod touch.