What an interesting post! I was not aware of how the electrical charge between the earth and humans works. I found reading about it in your post very intersting. In fact, so much so that I've actually read more about it.

A bigger body, bigger feet, and thinner shoe soles mean more charge has to be stored to produce the same voltage. This gives a higher-energy electrostatic discharge.

Great work!
Good luck with the contest, and thank you for the invitation.