To add to this, essentially if you’re standing upright on a floor, the floor is pushing back up at you to keep you from falling in (for this sake) the basement or lower level of house. You’re applying a load to the floor, which when you calculate the stress of your load (which would be Stress =s =load(force)/cross-sectional area of floor which all equals to P/A) this is where the floor comes into play, the floor is built to take your load (no pun intended) and distribute the stress given from your load. This is where stress comes in, when you take the weight of you (assuming you aren’t wearing any clothing to wear you down) and divide it by the cross-sectional area of the floor, this is when you’ll find out exactly how much stress you’re applying per square (inche is what I’m assuming as it’s the traditional unit in english speaking countries) as a result of your load/force. You see, you were mixing up forces between energy, I don’t think energy is even in this equation when you are simply just standing upright on a floor. You were not extorting energy to the floor, you were extorting a force (which is you) and giving the floor strain.

Note: I am still very new to this field of study, and I apologize if I have anything wrong. I’m open to constructive criticism, I’m simply just trying to work on problems so that I can further advance my studies, and give myself a challenge. Thanks for the question, it helped me get into that brainstorming mindset I needed.