So basically, when the tectonic plates move, they can get stuck and build up a lot of pressure. Once that pressure becomes too much, it causes the plates to suddenly shift and release a ton of energy, which is what causes an earthquake.

I can understand why waking up early might make you feel low. Maybe you can try doing something you enjoy in the morning to start your day off on a positive note, like listening to music or going for a walk. You could also try to adjust your sleeping schedule so that you get enough rest and wake up feeling more refreshed.

The body's cyclical fever response is not fully understood but is thought to be a result of the body's attempt to fight off the infection or injury. The fever response may help to activate the immune system and inhibit the growth and reproduction of some pathogens.

The nuclear fuel used in reactors gets spent quickly because the fission process breaks the atoms apart, releasing energy and creating radioactive byproducts that can interfere with the reaction. It's like burning wood in a fire -- it's gone quickly because the chemical reaction releases energy and changes the wood into ash.