"My watch knew I wasn't 100% after my COVID and flu jabs as all three vitals (Wrist Temperature, Heart Rate and Respiratory Rate) were outliers and that's how I knew I was not well, amazing tbh."
Unfortunately, the Apple Watch provides no evidence that differences in wrist temperature, heart rate and respiratory rate are due to the Covid vaccination ... heart rate and respiratory rate are things that are influenced by everything and nothing, 24/7. Unless you have a serious disease, you should rely on your common sense and not on the recordings of a measuring device (Apple Watch).
It seems that an Apple Watch is a wonderful motivator for hypochondriacs. 😂