It is not wise to play with a 5KV power supply if you need to ask if the human body "has capacitance".
This could result in an increase in the average IQ of the human race.
Its never about learning electronics, or worst reading helpful replies made, so let alone HV stuffs.
Its all about getting more subscribers for OP's video blog, and the needed attention, desperately.
Just read all his previous threads, you'll understand. Regarding IQ, I guess you can easily judge for your self.