Watch began to start logging exercise when I wasn't actually exercising

I have an apple watch 3 series that is only 2 months old, for some reason a couple of weeks ago it began to start logging exercise when I wasn't actually exercising, so my exercise ring would move without me doing actual physical exercise. I tried to reset some settings but nothing has worked so far. Any suggestions are welcome as I hate not having accurate information and just want it to go back to normal so I feel like I'm not cheating...

[Re-Titled by Moderator]