This is what many people don't get. It's the same with depression. You have to stand up against your own mind and its thoughts, that makes it so so difficult. What thoughts can you trust?
Proteins and enzymes begin to denaturate at temps >40°C, that's why a feaver exceeding this temperature is dangerous and why we feel a warning pain at 44°C.
They seem to have edited out the relevant part, it wasn't when I posted it. Here is another one: https://www.youtube.com/watch?v=8iEbxShZKL8