And people judged me for watching YouTube with uBlock Origin, or via NewPipe for eons.

Look who’s laughing now.

Easy fix:

Buy a fitness/smart watch - an older one is fine, why go excessive

Download GadgetBridge from F-Droid/Droidify and then use that instead of a proprietary app which is just harvesting your data and telemetry at every chance:

Oh thank you!!!

I just use Jerboa and the desktop site, and don’t notice any issue on either method. It could be your app?

To be fair I have a lot of images in there too, so that may have some impact for your app?