Recent models of Apple Watch–the Series 8 and later, to be precise–come equipped with a temperature sensor. That might sound useful for a variety of health purposes, but in practice, it has quite a lot of limitations. One of which is that by default it doesn’t tell you your body temperature. If you open the Health app on your iPhone and find the Body Measurements entry (there’s a search field under Browse) you’ll notice that wrist temperature trends are
