The 3 AM Wake-Up, Muscle Loss and Stalled Weight: What a Glucose Monitor Reveals
Dietitian and personal trainer Kayla Girgen joins Dr. Vonda Wright to explain what continuous glucose data reveals about midlife metabolism — including why so many women wake at 3 AM. The conversation moves from overnight blood sugar dips and insulin compensation to protein volume, calorie floors and rucking. The recurring message: measure first, then make one or two targeted changes rather than overhauling everything.
Overview
Kayla Girgen was among the first to suggest that women without a diabetes diagnosis could learn from a continuous glucose monitor, and this conversation with Dr. Vonda Wright explores what that data actually surfaces. Beyond food, the readings capture the effect of one poor night of sleep, a stressful meeting and the absence of muscle tone — things that are otherwise hard to count. A recurring pattern is the 3 AM wake-up: an overnight glucose dip triggers an adrenaline release that wires the body awake, a cycle both women say a small protein-and-fat snack before bed can smooth out.
Girgen argues that the wider system is too glucose-centric, watching A1C and fasting glucose while insulin has been shifting for years or decades. She describes the compensator — a woman whose glucose curve looks flat because her pancreas is working overtime — and explains why movement, especially a ten to twenty minute walk within thirty minutes of eating, lowers the insulin demand directly through muscle contraction. On nutrition, she frames protein as the macronutrient the body cannot store, sets a practical target of roughly 0.75 to 1 gram per pound of goal weight spread across meals, and uses the palm as a portion visual.
Both speakers push back hard on severe restriction, noting that many women arrive eating under 1,000 calories when the body needs well over that simply to remodel bone, muscle and organs. Girgen also introduces rucking — walking with weight in a backpack or vest — as a low-barrier way to add weight-bearing load, cardiovascular demand and posture work to a walk already in the routine. Her advice to the high-achieving woman who feels stuck starts with sleep, then protein, then data.
Key quotes
5Sometimes it's 3:37 because my blood sugar is 54 and my body is trying to save my life.
You're on a rampage about bones. I'm on a rampage about blood sugar.
It is the fire that has started a long time ago and now we're just starting to see that smoke.
Nine times out of ten I'm encouraging women to eat more, not less.
Food isn't just about glucose or grams of protein. It's woven into our fabric of life.
Key ideas
9Glucose data captures more than meals
Continuous readings show the footprint of one bad night of sleep, a stressful meeting and low muscle tone. Stress in particular is hard to quantify any other way, which is why seeing it plotted tends to be more motivating than being told about it.
The 3 AM wake-up has a metabolic signature
When overnight glucose drops, the body releases a burst of adrenaline to mobilise fuel. That adrenaline wires the mind awake and leaves women ruminating at 3:37 AM long after the dip has passed.
A small protein and fat snack smooths the night
Stopping food roughly three hours before bed works well until training volume rises. A modest savoury combination — full-fat cheese, a few olives, or full-fat Greek yogurt — buffers overnight levels without becoming a meal.
Prediabetes deserves a louder alarm
Both speakers describe patients told to simply do a little better with their diet, or to wait and see. That framing treats a years-long trend as a minor note rather than a signal worth acting on immediately.
Insulin moves long before glucose does
A1C and fasting glucose are three-month and single-moment snapshots of one variable. Fasting insulin, and the ratio between insulin and glucose, tell far more about what has been building underneath.
The compensator looks fine on paper
Some women show an almost flat glucose curve while their pancreas floods the system with insulin to keep it there. The reading looks reassuring, yet that insulin load is exactly what makes fat loss feel impossible.
Muscle contraction bypasses insulin
Working muscle can pull glucose out of the bloodstream without insulin doing the work. That is why a short walk after eating lowers the demand on the pancreas rather than merely burning calories.
Protein cannot be stored
Unlike fat and carbohydrate, protein has no reserve tank, so it needs to arrive repeatedly across the day. Girgen suggests roughly 0.75 to 1 gram per pound of goal weight, divided across three or four meals.
Rucking stacks several benefits onto a walk
Adding weight to an existing walk delivers weight-bearing load, a higher cardiovascular zone and postural work at once. It also raises workload by roughly ten percent without adding speed or incline.
Practical takeaways
7- 1
Wear the monitor before changing anything 6:00
Girgen asks clients to alter nothing during the first week. The baseline is the learning; chasing a flat line from day one removes the very information you put the sensor on to collect.
- 2
Try a protein-fat snack when 3 AM keeps repeating 13:00
If the pattern shows up night after night, a small combination of protein and fat before bed is the simplest lever to test first.
- 3
Walk within thirty minutes of eating 29:00
Ten to twenty minutes at moderate, low-impact intensity is enough. Keep it out of the high-intensity range, which competes with digestion.
- 4
Spread movement instead of banking it 31:00
Short bouts scattered through the day — stairs, chair squats, a lap to the printer — read better on glucose data than a single block, without replacing structured training.
- 5
Use your palm as the minimum portion 41:00
A palm of meat, poultry or fish is roughly three to five ounces, and that is the floor per meal rather than the target. A protein shake or a scoop stirred into yogurt closes the gap on busy days.
- 6
Raise the calorie floor before cutting further 46:00
Bone, muscle and organs are remodelled continuously, and that work has a cost. Eating under a thousand calories starves the process rather than accelerating results.
- 7
Start rucking with what you already own 50:00
An old backpack with a towel-wrapped dumbbell works. Keep the weight high and tight between the shoulder blades, start near ten pounds, and add load gradually rather than distance, speed and grade at once.
Topics & chapters
15Why glucose data changes the conversation
Girgen is introduced as one of the earliest voices suggesting monitors for women without diabetes. Dr. Wright describes nearly two years of continuous wear.
What the readings surface beyond food
Sleep, stress and muscle tone all leave a trace. The data makes visible what calorie and protein counts cannot.
The 3:37 AM wake-up
An overnight dip triggers adrenaline, which wires the body awake. The pattern often repeats like clockwork.
Buffering the night with protein and fat
Stopping food three hours before bed, plus a small savoury snack when training volume rises.
Prediabetes and the wait-and-see problem
Both speakers describe how lightly rising numbers are often communicated to patients.
Insulin is the missing half of the picture
Fasting insulin and the insulin-to-glucose ratio reveal what a normal glucose reading hides.
The compensator profile
A flat curve maintained by an overworking pancreas, and why it makes fat loss stubborn.
The spiker and the crash
Carbohydrate eaten alone drives a rise then a rebound below baseline, with shakiness and post-meal fatigue.
Movement snacks that actually work
A short walk within thirty minutes of eating, stairs, chair squats and habit stacking through the day.
How long to wear a sensor
Two or three sensors for most people, quarterly check-ins, and why constant wear can become counterproductive.
Data before medication
Girgen sees value in understanding your own patterns before starting a GLP-1, including the effect on food noise.
Protein: why the body needs it daily
No storage tank, a target based on goal weight, and how to space it across meals.
Volume, palms and plant-based sources
What thirty grams actually looks like, and the extra planning vegetarian and vegan eating requires.
Eating more to change body composition
The metabolic cost of simply existing, and why severe restriction undermines bone and muscle.
Rucking and the rapid-fire close
Walking with weight, how to start, and quick answers on fruit, smoothies and sleep.
