Day seventy of my Rhythm Reset. Brain wouldn’t shut up about food. “Wonder what’s for lunch.” I don’t eat lunch. “Could murder a sandwich.” Haven’t eaten sandwiches in months. “Is it dinnertime yet?” Seven AM. All day. Non-stop.
The day before? Fake Christmas. 3,718 calories. 154 grams of sugar. Roast dinner, trifles, chocolate, crisps. Family tradition. Properly enjoyed it. No regrets.
But the next day? My satiety dashboard was scrambled. Turns out there’s research on this. Andy Chan — Harvard researcher — explains exactly why ultra-processed foods bypass your fullness signals. And why it took forty-eight hours to recover.
What Actually Happened on Day 69 (Fake Christmas)
Day sixty-nine. Family tradition. We celebrate twice. Once early with the grandson. Once on actual Christmas Day.
The damage (tracked):
- Total calories: 3,718
- Sugar: 154 grams (quite a lot)
- Full roast dinner: 1,600 calories
- Trifles: 900 calories
- Crisps: 266 calories
- Chocolate: 460 calories
- Chicken soup: 480 calories
Eating window stretched from four hours to eight. Started late morning. Finished evening. All properly tracked. No shame. No guilt. This was a celebration.
The Next Morning: When the Noise Started
Woke up on Day seventy. Brain wouldn’t stop. Not hungry. Not stomach-growling. Just constant background noise.
For weeks, my food thoughts had been quiet. Eat when planned. Feel satisfied. Move on. Simple. Clear signals.
Now? Static. All day.
“What’s for breakfast?” I don’t eat breakfast. “Wonder what’s for lunch.” It’s seven AM. “Could murder a sandwich.” Haven’t wanted bread in months.
My actual notes that day:
- “My head is looking for food from waking.”
- “I am having some form I think of sugar withdrawal.”
- “Fingers are inflamed. Feel bloated.”
This wasn’t real hunger. This was something else.
The scale:
- Day 68: 13 stone 3
- Day 69 (Fake Christmas): 13 stone 5 (up 2 pounds)
- Day 70: 13 stone 6 (up another pound)
Expected. Water weight. Glycogen refill. Doesn’t bother me.
What bothered me was the noise. The constant food thoughts. For ten weeks, hunger had a rhythm. Now it was just… chaos.
The Science: Why UPF Scrambles Your Satiety Dashboard
Andy Chan’s research explains everything. Harvard. ZOE studies. Works on ultra-processed foods and metabolic health.
Here’s what he discovered:
“Ultra-processed foods are deliberately manufactured to hit a ‘bliss point’ of sugar, fat, and salt, which allows them to bypass normal satiety and fullness signals in the brain.”
Meaning: UPFs are engineered to scramble your dashboard.
Think of satiety like your car’s fuel gauge. Normally works fine. Quarter tank? You know you’ll need petrol soon. Empty? Time to fill up. Clear signal. Clear response.
Ultra-processed foods hit this specific combination. Sugar. Fat. Salt. Exact ratios. Engineered in labs. Tested on focus groups. Not food. Product design.
And when you eat them? Your fuel gauge goes haywire.
Your brain stops registering fullness properly. You eat. Food registers. But the “I’m done” message? Delayed. Scrambled. Or just… missing.
So you keep hunting.
Day sixty-nine foods breakdown:
- Roast dinner: Real food. Protein, veg, gravy. Fine.
- Trifles: UPF. Sugar, custard, cream, jam. Scrambled the signal.
- Crisps: UPF. Salt, fat, engineered crunch. More scrambling.
- Chocolate: UPF. Sugar, fat, bliss point formula. Full static now.
The roast was fine. The UPF broke my dashboard.
Two Types of Hunger (Once You Know, You Can’t Unknow)
Day seventy taught me something critical. There are two completely different types of hunger. Once you’ve felt both, you can tell them apart.
Type 1: Genuine Hunger
- Comes in waves
- Peaks around hours sixteen to twenty
- Then passes
- You feel hungry. You drink water. You wait ten minutes. Hunger fades
- Your body adapts. Switches fuel sources. Moves on
- Has a rhythm. Comes. Goes. Returns. Settles
- Pattern you can predict
Type 2: UPF-Driven Noise
- Constant. No waves. No rhythm
- Just background static
- Never fully satisfied
- Always thinking about food
- This isn’t hunger. This is hormonal disruption
- Your fuel gauge asking questions it shouldn’t need to ask
- “Are we full yet?” “Should we eat more?” “What about now?”
- The feedback loop between your gut and your brain is scrambled
The difference is striking once you’ve experienced both. Real hunger has a pattern. UPF-driven thoughts are just… noise.
The Recovery: How Long It Actually Takes
Good news. It clears. Takes time, but it clears.
Timeline:
- Day 70 (morning): Brain won’t stop. Food thoughts constant.
- Day 70 (evening): After real food and short fast, clarity starting to return.
- Day 71: Signals calming down.
- Day 72-73: Back to normal satiety.
What helped:
- Back to non-UPF meals (soups, chicken, real food)
- Back to structured windows (four hours, not eight)
- Short fasts between meals (let insulin settle)
I know this pattern because I’ve tracked it before. Whenever I have a high-UPF day, the next forty-eight hours are noisy. Food thoughts. Cravings. Low-level hunger that isn’t real.
Not because I didn’t eat enough. Because the signals are scrambled.
Give it two to three days of real food and proper windows, and the signals calm down again. Doesn’t require perfection. Just requires patience.
The Six-Step Recovery Protocol
Here’s what you actually do.
Before the high-UPF day: Know it’s coming. Plan for it. Celebrations happen. Life happens. One day doesn’t ruin seventy. Don’t stress.
During the high-UPF day: Enjoy it. Don’t feel guilty. Track it if you want (I did), but don’t obsess. Connection matters more than macros.
The next day (when the noise starts):
Step 1: Expect it Your brain will be noisy. That’s biochemistry, not failure. The signal’s scrambled. Doesn’t mean you’re weak.
Step 2: Don’t graze Stick to your eating window. Don’t feed the noise. Constant eating makes the scrambling worse.
Step 3: Real food only Non-UPF meals. Soups. Protein. Vegetables. Whole foods. Nothing engineered for bliss point.
Step 4: Hydrate properly Water helps. Black coffee helps. Herbal tea helps. Flush the system.
Step 5: Short fasts between meals Let insulin settle. Give your body time to recalibrate. Don’t panic-eat because thoughts are loud.
Step 6: Give it 48 hours Don’t judge yourself on Day one recovery. Wait for Day two or three. The noise will clear. The signals will return. Just have to wait it out.
What This Actually Proves About Your Body
Day sixty-nine and seventy taught me this: Your body remembers. Not just yesterday’s meal. Weeks of meals.
For ten weeks, I’d been running on real food and fasting. My system had adapted. Preferred fat as fuel. Got comfortable with ketones. Satiety signals working properly.
When I flooded it with 3,718 calories of UPF? My body noticed.
The noise. The scrambled signals. The constant food thoughts. That wasn’t weakness. That was proof.
- Proof I’d built metabolic flexibility
- Proof my system could tell the difference between real food and junk
- Proof that it didn’t want the junk anymore
But also proof that recovery is part of the process. You’re not broken if you have a high-UPF day. You just need forty-eight hours to recalibrate.
That’s the pattern. And honestly? I still lost a stone over seventy days. Even with Day sixty-nine and seventy.
Because one high-UPF weekend doesn’t break the pattern. The pattern is what matters.
🎯 Key Takeaways
- Ultra-processed foods bypass satiety signals — Andy Chan’s Harvard research shows UPFs are engineered to hit a “bliss point” that scrambles your fullness dashboard
- Two types of hunger exist — Real hunger comes in waves and passes; UPF-driven noise is constant static with no rhythm
- Recovery takes 48 hours — After a high-UPF day, expect noisy food thoughts for two days while your signals recalibrate with real food and structured eating windows
Ready to Build Your Own Food Rhythm?
One high-UPF day taught me more about my body’s signals than weeks of perfect eating. The pattern matters more than perfection.
👉 Get the 14-Day Rhythm Reset Guide (free)
💪 Want ongoing support? Join Rhythm Club for £30/month (includes FREE app access, community, and weekly accountability calls)
🔽 Read the Video Transcript
Day seventy of my Rhythm Reset. Woke up and my brain wouldn’t shut up. “Wonder what’s for lunch.” (Don’t eat lunch.) “Could murder a sandwich.” (Haven’t eaten sandwiches in months.) “Is it dinnertime yet?” (It’s seven AM.) All day. Non-stop. Constant food thoughts.
The day before? Fake Christmas. Three thousand, seven hundred and eighteen calories. Roast dinner. Trifles. Chocolate. Crisps. Properly enjoyed it. Family tradition. No regrets about the meal.
But the next day? My satiety dashboard was scrambled. Turns out there’s research on this. Andy Chan — Harvard researcher — explains exactly why ultra-processed foods bypass your normal fullness signals. And why it took forty-eight hours to recover. Let me show you what happened.
Right. Day sixty-nine. Fake Christmas. Family tradition. We celebrate twice. Once with the grandson early. Once on actual Christmas Day. Total calories: 3,718 Sugar: 154 grams (that’s… quite a lot) Full roast dinner: 1,600 calories Trifles: 900 calories Crisps: 266 calories Chocolate: 460 calories Chicken soup: 480 calories
Eating window stretched from four hours to eight. Started late morning. Finished evening. All properly tracked. No shame. No guilt. This was a celebration.
Woke up on Day seventy. And my brain… wouldn’t stop. Not hungry. Not stomach-growling. Just constant background noise. For weeks, my food thoughts had been quiet. Eat when planned. Feel satisfied. Move on. Simple. Clear signals. Now? Static. All day.
“What’s for breakfast?” I don’t eat breakfast. “Wonder what’s for lunch.” It’s seven AM. “Could murder a sandwich.” Haven’t wanted bread in months.
My actual notes that day: “My head is looking for food from waking.” “I am having some form I think of sugar withdrawal.” “Fingers are inflamed. Feel bloated.” This wasn’t real hunger. This was something else.
Day 68: Thirteen stone three Day 69 (Fake Christmas): Thirteen stone five (up 2 pounds) Day 70: Thirteen stone six (up another pound) Expected. Water weight. Glycogen refill. Doesn’t bother me.
What bothered me was the noise. The constant food thoughts. For ten weeks, hunger had a rhythm. Now it was just… chaos.
So I wanted to understand what actually happened. Found Andy Chan’s research. Harvard. ZOE studies. Works on ultra-processed foods and metabolic health. And what he’s found explains everything.
Here’s what Chan discovered: “Ultra-processed foods are deliberately manufactured to hit a ‘bliss point’ of sugar, fat, and salt, which allows them to bypass normal satiety and fullness signals in the brain.” Meaning: UPFs are engineered to scramble your dashboard. Think of satiety like your car’s fuel gauge. Normally works fine. Quarter tank? You know you’ll need petrol soon. Empty? Time to fill up. Clear signal. Clear response.
Ultra-processed foods hit this specific combination. Sugar. Fat. Salt. Exact ratios. Engineered in labs. Tested on focus groups. Not food. Product design. And when you eat them? Your fuel gauge goes haywire.
Your brain stops registering fullness properly. You eat. Food registers. But the “I’m done” message? Delayed. Scrambled. Or just… missing. So you keep hunting.
Day sixty-nine foods: Roast dinner: Real food. Protein, veg, gravy. Fine. Trifles: UPF. Sugar, custard, cream, jam. Scrambled the signal. Crisps: UPF. Salt, fat, engineered crunch. More scrambling. Chocolate: UPF. Sugar, fat, bliss point formula. Full static now. The roast was fine. The UPF broke my dashboard. Day seventy taught me something critical. There are two completely different types of hunger. And once you’ve felt both, you can tell them apart.
Type 1: Genuine Hunger Comes in waves. Peaks around hours sixteen to twenty. Then passes. You feel hungry. You drink water. You wait ten minutes. Hunger fades. Your body adapts. Switches fuel sources. Moves on. I know this hunger. Felt it hundreds of times during fasting. It has a rhythm. Comes. Goes. Returns. Settles. Pattern you can predict.
Type 2: UPF-Driven Noise Constant. No waves. No rhythm. Just background static. Never fully satisfied. Always thinking about food. This isn’t hunger. This is hormonal disruption. Your fuel gauge asking questions it shouldn’t need to ask. “Are we full yet?””Should we eat more?” “What about now?” The feedback loop between your gut and your brain is scrambled. The difference is striking once you’ve experienced both. Real hunger has a pattern. UPF-driven thoughts are just… noise.
Right. Good news. It clears. Takes time, but it clears.
Day 70 (morning): Brain won’t stop. Food thoughts constant. Day 70 (evening): After real food and short fast, clarity starting to return. Day 71: Signals calming down. Day 72-73: Back to normal satiety.
What helped:
- Back to non-UPF meals (soups, chicken, real food)
- Back to structured windows (four hours, not eight)
- Short fasts between meals (let insulin settle)
I know this pattern because I’ve tracked it before. Whenever I have a high-UPF day, the next forty-eight hours are noisy. Food thoughts. Cravings. Low-level hunger that isn’t real. Not because I didn’t eat enough.
Because the signals are scrambled. Give it two to three days of real food and proper windows, and the signals calm down again. Doesn’t require perfection. Just requires patience.
Here’s what you actually do. **Before the high-UPF day:**Know it’s coming. Plan for it. Celebrations happen. Life happens. One day doesn’t ruin seventy. Don’t stress. During the high-UPF day: Enjoy it. Don’t feel guilty. Track it if you want (I did), but don’t obsess. Connection matters more than macros.
The next day (when the noise starts):
Step 1: Expect it Your brain will be noisy. That’s biochemistry, not failure. The signal’s scrambled. Doesn’t mean you’re weak.
Step 2: Don’t graze Stick to your eating window. Don’t feed the noise. Constant eating makes the scrambling worse.
Step 3: Real food only Non-UPF meals. Soups. Protein. Vegetables. Whole foods. Nothing engineered for bliss point.
Step 4: Hydrate properly Water helps. Black coffee helps. Herbal tea helps. Flush the system.
Step 5: Short fasts between meals Let insulin settle. Give your body time to recalibrate. Don’t panic-eat because thoughts are loud.
Step 6: Give it 48 hours Don’t judge yourself on Day one recovery. Wait for Day two or three. The noise will clear. The signals will return. Just have to wait it out.
Day sixty-nine and seventy taught me this: Your body remembers. Not just yesterday’s meal. Weeks of meals.
For ten weeks, I’d been running on real food and fasting. My system had adapted. Preferred fat as fuel. Got comfortable with ketones. Satiety signals working properly. When I flooded it with 3,718 calories of UPF?
My body noticed. The noise. The scrambled signals. The constant food thoughts. That wasn’t weakness. That was proof. Proof I’d built metabolic flexibility.Proof my system could tell the difference between real food and junk. And proof that it didn’t want the junk anymore.
But also proof that recovery is part of the process. You’re not broken if you have a high-UPF day. You just need forty-eight hours to recalibrate. That’s the pattern. And honestly? I still lost a stone over seventy days. Even with Day sixty-nine and seventy. Because one high-UPF weekend doesn’t break the pattern. The pattern is what matters.
Quick reminder: This is what happened to me after a high-UPF day. Your response might be different. Educational content, not medical advice. Speak to your GP before changing your diet or fasting pattern.
Your body. Your signals. Your decision.
Next up: “The Three-Pound Spike: Why Water Weight Isn’t Fat (And How Long It Actually Takes to Clear).”
See you there.
⚠️ Important: This is educational content based on evidence and personal experience. It is not medical advice. Speak to your GP before making changes to your fasting pattern, diet, or medication.
Questions? Email hello@waymorethanweightloss.com
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