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

1. Sleeping on Your Back with Sleep Apnea: The Silent Suffocation
The most lethal mistake is ignoring obstructive sleep apnea, especially when sleeping on your back.

Loud snoring, pausing for seconds at a time, gasping during the night, or waking up tired are not normal. These are clear signs that the airway is repeatedly collapsing while you sleep, causing sudden drops in oxygen levels.

Each pause in breathing triggers an emergency reaction:

Increased blood pressure

Adrenaline surge

Rapid heart rate