Please delete if not allowed. The teacher charged a 1 square foot sheet of mylar sheet up to approx DC 20 kv one day long ago in school via an modified EHT output of a TV. I had one of my mates hold it by the corners in line with my hands, I then judged and guessed and clapped it with both hands opposite sides to discharge it. I felt the compression thru my chest my heart seemed to sort its self out and that was 30 years ago. Not too sure about brain damage? I was never that good at basic school work anyway. Calculation. I am not sure about the contact closure time of hands (2 mS). Full Hand to Hand resistance unsure (1 k). Surface area of hand .054 m square. Mylar sheet dielectric constant 3.1, thick enough to withstand 20 kv. I have come up with 1.186 Joules or 600 W roughly discharged.