Extreme laughter, while unusual, has been documented to result in fatal consequences such as leading to a heart attack or suffocation.

It can induce a rapid rise in heart rate and blood pressure, both of which could be hazardous for people who have pre-existing cardiac issues.

In severe circumstances, the stress placed on the heart during fits of laughter may result in cardiac arrest and death.

The immense stress of laughter may create serious risks, such as causing a brain aneurysm—a swelling in a compromised blood vessel that might explode.

https://www.thestar.com.my/news/true-or-not...o-hard-kill-you

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