Three different problems get called ‘bad sleep’, and the fixes are not interchangeable. Why the 3am wake-up usually comes down to blood sugar or alcohol — and what to try first.
Lighter sleep, earlier bedtimes and brief night-time waking are ordinary changes, not faults. The one measure that actually matters, and the four patterns that genuinely need a doctor.
The cheapest form of magnesium is the one that mostly passes straight through you — and it is the one most likely to upset your stomach. The second word on the label is the one that matters.