She d.ied in his sleep from doing this: I implore you, don’t do it. It causes heart attacks and strokes.

Depress the nervous system.

Prolong breathing pauses.

Reduce the brain’s ability to react to a lack of oxygen.

In people with sleep apnea or heart problems, this can be fatal. Furthermore, their prolonged use has been associated with an increased risk of heart attack, stroke, cognitive decline, dementia, and falls during the night.

What to do