What 90 Nights Actually Look Like, Week by Week

Not an app, not a tracker. A notepad and a pen on the nightstand, and three lines written in the morning, never at 3am. Don’t check the clock in the night; looking makes it worse. In the morning, “around three” is precise enough.

The three lines are always the same:

How the lines read. “Got back to sleep” is quickly, eventually, or no. That’s all.

If you can, write three nights before you start. It’s the only way to know what your own normal looked like, rather than what it felt like.

The notepad is the test. Everything below is how to read it.

Three capsules, 30 minutes before bed, at the same time every night. That’s the whole routine, and the consistency matters more than the timing.

What week one usually looks like is nothing much, and that’s normal. Three things are worth knowing:

• Some people feel heavier in the morning at first. It generally settles within a week. If it doesn’t, take it a little earlier in the evening.
• Your stomach should be fine. Glycinate is the gentle form. If you’re used to citrate and the 6am bathroom run, this is different.
• A small share find glycinate stimulating. If your nights get clearly worse, you’ll know inside a week. Stop, and use the guarantee. That’s what it’s for.

If week one feels like nothing happened, that’s what week one usually looks like.

Before we made anything, we read thousands of public messages from women describing this. The ones who gave up on magnesium mostly did so around day ten. The ones who described a real change had taken it every night for six to twelve weeks.

Day ten is a trap for a simple reason: you’re judging by single nights. The 3am wake-up came back on Tuesday, so it “isn’t working.” But one night tells you nothing in either direction.

This is the window the research covers. In a 2025 placebo-controlled trial in 155 adults who slept poorly, four weeks of magnesium bisglycinate lowered insomnia scores more than placebo. The effect was small, and the authors say so.

Here is the part most people miss: the first thing to look at is not whether you wake. You may well keep waking around three. Look at what happens after. Does “eventually” turn into “quickly” more often than it did in week one?

That’s the question The Night Formula is built around: when you woke up, did you get back to sleep?

The older trial, in 46 adults with insomnia, ran for eight weeks. These are the weeks where the routine either holds or quietly falls apart, usually around a trip or a bad week at work.

• Missed a night? Don’t double up the next evening. Just carry on.
• On thyroid medication or certain antibiotics? Keep them a few hours apart from magnesium, and ask your pharmacist if you’re unsure.
• The third line is the noisiest. A bad meeting can make a good night look bad. Read it in weeks, never in days.

Put your first fourteen nights next to your last fourteen. Count how often you wrote “quickly” in each. That comparison is more honest than any feeling you’ll have about it, and it ends in one of three places:

• Clearly better. Keep the routine. Nothing about it needs to change.
• No real difference. Write to us. One email, full refund, opened bottles included, nothing to ship back, and you keep the guide.
• Worse, or something new. Stop, and see a clinician.

Whichever it is, take the notepad to your next appointment. Two weeks of dates are worth more in that room than any adjective. And if nothing moved at all, that’s useful too: sleep apnoea, low ferritin and an untreated thyroid all break nights, and magnesium won’t touch any of them.