This seems to happen a lot, at the point now that I don't feel this watch is safe. The skin under the optical sensor has become quite hard and looks and feels like it has been burnt.
It gets worse if I go for a longer run. Lots of threads on this, don't think it should be ignored. This injury is now a week old and still sore, who knows what damage is being done?
Garmin Forerunner 235 ciq.forums.garmin.com/.../1409521.jpg