That's why it is not advisable to those have heart attacks to watch any horror movies esp. paranormal activity since it has immediate and long term effects. It can be a cause of heart attack or cardiac arrest. It is a major source of stress & can precipitate the above conditions. I have seen people running out of theater in acute panic and some even pee out. Long term effects are in pregnant ladies, as the first sense to develop is the hearing perception. Miscarriage can took place.In some case here is what happens to other people, their adrenal gland releases adrenaline and this raises their heart beat, they breath harder to gain more oxygen, and they get ready to fight or flight. So don't watch horror movies if you are not used in watching it because you could develop real phobias and traumas.But since this is a horror fan site, I dont think there are folks here that are not used to watch very horrifying films...


![[-]](http://talkhorror.com/boards/themes/dim/collapse.png)