Two days ago my watch decided to start automatically tracking swimming on my watch but I am not swimming. It even does it while on the charger. I have cleared the cache on the Samsung Health app, I have powered off and on my watch, I have force stopped the galaxy app and the Samsung Health app, I don't have swimming as a top three exercise on my app, and I checked for updates (which it recently did.) It's driving me nuts and running my battery down fast.
Have you tried resetting your watch?
Give this link a try: https://www.samsung.com/us/support/answer/ANS00084702/
Can I please have your full model number, software version, Bluetooth or LTE, service provider, device your watch is paired with and the Android version on that device?
Model number - SM-R810
Software version - R810XXU1DTA4
Service provider - Verizon
Device your watch is paired with and the Android version on that device? - Samsung Galaxy S9
I recommend having your device checked out by a certified technician. I'd be more than happy to set this service up to have your device shipped in, just provide the following information via private message: