It's half past ten in the morning and you've already been through the biscuit tin once.
You know why. You were up at two with a child who'd had a bad dream, then lay there until four running through tomorrow's list. By the time the alarm went you'd had maybe five hours, in pieces.
And now everything in the pantry is calling your name.
One night is enough
Most women think of sleep as the thing that decides how tired they feel. It also decides how your body handles food the very next day.
In sleep studies, healthy adults given a single night of around four hours' sleep were noticeably less sensitive to insulin the following day. One night. Not a month of them.
Less sensitive to insulin means your body has to work harder to move sugar out of your blood and into somewhere useful. More insulin, for longer. And while insulin is up, your body is in storage mode.
Why the hunger changes too
Short sleep turns the hunger volume up. The signal that tells you you're hungry gets louder and the one that tells you you've had enough gets quieter, so the food that sounds good at half past ten is the fast stuff.
Willpower doesn't come into it. Your body is short on recovery and asking for quick fuel to cover the gap.
The week that falls over on Thursday
When a client tells me her week fell apart by Thursday, the first thing I ask about is her bedtimes. More often than not, Monday and Tuesday were late ones.
The food went sideways two days after the sleep did, and she only noticed the food.
This gets louder in perimenopause, when sleep starts breaking up on its own. The 3am wake-up. The mind that won't switch off. The women I work with in their forties are often sleeping worse than they did at thirty-five and eating the same food, and wondering why it lands so differently.
What helps the morning after
A bigger breakfast, with proper protein in it. Thirty grams of actual food, so your body has something steady to run on instead of going looking for sugar by ten.
An earlier night that night, if you can swing it. Not perfect sleep. Just more than last night.
A rough night tells you exactly what tomorrow's breakfast needs to be.
Want to work out what your mornings need? Book a free 30-minute connection call.
Stacey Oldham is a certified metabolic nutrition and mental health coach in Christchurch, working with women who have done everything right and got nothing back.
