Apple Watch stops working when doing indoor walk

It's not designed or recommended by apple to be worn on the inside of the wrist;

This is a quote from an apple support document;

A better fit means better readings

For best results, the back of your Apple Watch needs skin contact for features like Wrist Detect, the Taptic Engine, and the electrical and optical heart sensors. Wearing your Apple Watch with the right fit – not too tight, not too loose, and with room for your skin to breathe – keeps you comfortable and lets the sensors do their jobs. You may want to tighten your Apple Watch band for workouts, then loosen it when you’re finished. In addition, the sensors will work only if you wear your Apple Watch on the top of your wrist.

Gwennie327 wrote:

I’ve always worn my watches on the inside of my wrist never has a problem, like I said it works fine on an outdoor walk, I have tried it on top of wrist for an indoor walk and it stills stops and starts periodically, so I don’t get a true recording of my activities

Testing the Watch in the expected position is somehow an imposition?