What happens when we die (from a biologist’s POV)
Staving off death is a thing that you have to work at. Left to itself—and that is what it is when it dies—the body tends to revert to a state of equilibrium with its environment. If you measure some quantity such as the temperature, the acidity, the water content or the electrical potential in a living body, you will typically find that it is markedly different from the corresponding measure in the surroundings… More generally, if living things didn’t work actively to prevent it, they would eventually merge into their surroundings, and cease to exist as autonomous beings. That is what happens when they die.
—Richard Dawkins, The Blind Watchmaker
The body continues to do its part by working throughout the day even when your mind convinces you not to work.