I purchased the Apple watch back in July 2022, and within the last 7 days, I experienced what appears to be a circular burn on my left rest. I noticed it one morning after I awoke from sleep. I take the watch off when washing dishes and when showering every day. So, I'm concerned if a recent update to the watch changed the power output of the sensors that caused the burn. The picture attached is after a week of not wearing the watch. The circular area is raised red, non-burning or itching. I see that others have commented on similar experiences with the Apple Watch. Mine is Series 7 with aluminum case.