If you tickle a person for a long time,
then over time there have pain that is very difficult to tolerate.
Incredible power pervades the whole body,
a person experiences convulsions.
Nerve centers are excited and the body is in a short-term stressful state.
All this can lead to a heart attack.
In addition, prolonged tickling can cause a spasm of the airways,
because of what a person can suffocate
Medieval inquisitors knew about this
and often used torture using tickling.