“What happens is that the hotter people get,physiologically,with mental stress,the more likely they are to blow apart with some heart problem.”
事实上,生气的人在心理上变得越激动,他们的身体就在生理上变得越激动,他们的身体就越可能罹患心脏病.
Meaning:“The fact is that the more angry people become because of high mental pressure,the more likely they are to come down with some heart disease.”
blow apart:break by an explosion; explode
His car had been blown apart.
In this sentence “blow apart” is used in its figurative sense,meaning “break down physically”.