the risk of heart attacks

[Bibilui]

less than how many hours of sleep a night would run a person 2 to 3 times the risk of heart attacks?

[dotjhawkes]

this question makes no sense.

[funnywebsite]

It depends on the person. Margaret Thatcher was known to live on about a maximum of 4 hours sleep a night. This is not recommended though. I don't know if lack of sleep would give you a heart attack. You would function less and fall asleep more easily. At the end of the day your body will start shutting down and fall asleep at every opportunity if it required sleep.