Watch Fever
Behindtheapps srl
Do you know that your heartbeat is related to your body temperature? Yes, in fact a research study proved this connection long time ago in 1986 (Fever and cardiac rhythm - Karjalainen J, Viitasalo M). In particular, for each extra 10 bpm you get an extra Celsius degree. This means that, assuming your body temperature at rest is 36.5 and your heartbeat is 65, if you observe that your heartbeat is 75bpm you can infer that your temperature is 37.5, and you have fever!