hello sir!
Ths is ABID, professionally a high school teacher of biology and clinical pshychology student... last time my lecture was on the cardial disorder "heart attack".. during questions answers session..one of student raised a question of which i was not used to listen usually that " can a person be heart attacked due to happiness and in laughter"?

thanks..and waiting for the response.

rarely yes. see

http://www.bmj.com/content/347/bmj.f7274
Cardiovascular harms