Reader-added comments as of this point consist of "Kogasanecdote" and "Passed out for the Nth time".

Well that's bloody terrifying.

That is definitely NOT good...

Jesus shit what?!

If confronted with constipation or a stomach illness, it is possible to strain oneself so hard that not enough blood can get back to the heart, resulting in a faint. It's called "defecation syncope": fainting from trying to poop.

It's nature is not well understood because it is rarely reported.

However, all types of vasovagal syncope (fainting from stress) usually don't last longer than 15-20 minutes. So unless he hit his head on the way down, that is definitely a red alarm to get a blood sugar and heart check. Fainting can also happen from dehydration, vitamin deficiency, or electrolyte imbalance, so at least there's hope it isn't something bad.

Blindga said:

If confronted with constipation or a stomach illness, it is possible to strain oneself so hard that not enough blood can get back to the heart, resulting in a faint. It's called "defecation syncope": fainting from trying to poop.

It's nature is not well understood because it is rarely reported.

However, all types of vasovagal syncope (fainting from stress) usually don't last longer than 15-20 minutes. So unless he hit his head on the way down, that is definitely a red alarm to get a blood sugar and heart check. Fainting can also happen from dehydration, vitamin deficiency, or electrolyte imbalance, so at least there's hope it isn't something bad.

She's also using a squatting toilet. As everyone already knows, staying in that kind of position for extended periods of time and then suddenly shifting one's weight results in a sudden rush of blood to the legs, and some people can suddenly black out from just that alone.

Now add them both and the probability to suddenly get KO-ed is not all that low.