Engineering energy
Engineering is essentially all about taking one type of energy -- mechanical, electrical, chemical, nuclear, solar, gravitational, orbital, potential, kinetic -- and converting it into a different type of energy, storing it for later, or using it to move or create or destroy something. #science

Decision fatigue reduction
Decision fatigue is the concept that having too many options or choices makes it more difficult to decide.  I realized recently that I unintentionally reduce decision fatigue by adopting habits and blindly following them forever.  The benefit of this is that (a) I feel less stressed by having too many decisions to make, and (b) my mental energy can be spent on more important things, like eating cheeseburgers or melting ice cubes.  I've consciously or unconsciously reduced the number of decisions I make on a regular basis with these Ten Simple Tricks (TM) (but I could only think of four for now, so bear with me): 
  1. I wear the same thing everyday.  I have like 24 pairs of exactly the same sock.  My pants are all versions of "khaki".  My shirts are all some sort of blue or some sort of green.  Everything matches.
  2. I use a clothes rotation.  I wear whatever is at the back of the closet or the bottom of the pile, then I put worn/clean clothes at the front/top.  It's literally more effort to not do this.
  3. I eat the same thing or the same concept of thing for pretty much all meals.  Meals are generally meat, vegetables, carbs.  Today's meal is tomorrow's leftover.
  4. I park in the same parking spot at work every single day.  I sit in the same chair in the conference room for every meeting.
I used to think it was weird that I'm such a creature of habit.  But in reality it's more beneficial for me to make a decision one time, then never have to make that decision again. #psychology