I've worked with several epileptic individuals. One interesting case is someone that I worked with who had never had a seizure... what likely triggered it was: a.) lack of sleep; b.) a new medication, which lowered the threshhold for a seizure. Everyone is different - you can't really make assumptions. You'd have to think his medical team has looked into all possibilites, and tried to assess what contribution each factor could have. If I had to guess in Kill's case - and this is moslty conjecture - it is stress related, and sleep, given the demanding schedules of a coach, could be factors. When they test for epilepsy, they often want you to be sleep deprived as part of the testing process... which, I assume means it is a common trigger. In fact, the sleep deprivation is what allowed the above referenced individual to be diagnosed.