I lost 7 kg in 12 weeks. I went from 86 to 79 kg. And I did it while eating more food than I've ever eaten in my entire life.
What I didn't do was download MyFitnessPal and start tracking calories. What I didn't do was start skipping meals. I didn't do the fasted rides where you end up bonking 60k from home and end up absolutely hating your life. I didn't do any of that.
But here's the part that's going to annoy some people: I actually didn't lose power. I got faster during this whole period. My energy went up. I stopped craving junk food at 9pm. And never once did I feel like I was on a diet.
Why Conventional Cycling Weight Loss Fails
The cycling internet tells you weight loss is simple. Calories in versus calories out. Burn more than you eat. Ride more. Eat less. This advice is so outdated. It's not just incomplete — it's actually making you fatter, slower, and more miserable on the bike.
Here's what most cyclists do when they want to lose weight. I know this because I did every single one of these things for years.
The calorie deficit trap. You download MyFitnessPal. You set some arbitrary deficit target. You eat 1,800 calories a day. You feel smug for four, five, six days. Then you do a hard Tuesday night chain gang ride, come home absolutely hollowed out, eat everything in the fridge, and by Friday you've given up.
The fasted ride myth. You heard somewhere that riding on empty accelerates fat burn. So you roll out on a Saturday morning with nothing but a black coffee. Maybe you do burn a little more fat in that session. But your power is in the toilet, you can't hold a wheel in the group, and you come home so depleted that you overeat for the next 36 hours. The net result: you've consumed more total calories than if you'd just eaten breakfast and ridden properly.
The carb fear. No pasta, no rice, no bread because some influencer told you carbs are the enemy. When you chronically restrict carbohydrates, three things happen. Your hard sessions suffer — you can't hit the numbers. Your recovery falls off a cliff. And worst of all, you start building guilt around food and falling out of love with the bike entirely.
Your body isn't a calculator. It's an adaptation machine. If you don't fuel it correctly, it doesn't just slow down. It fights against you.
The Framework: Fuel for the Work Required
The answer came from Dr Sam Impey, a World Tour nutritionist who wrote arguably the most important sports nutrition paper of the last decade. He developed this framework with Professor James Morton at Liverpool John Moores University.
It's not a diet. It's a framework. And it flips everything you've been told on its head.
Instead of eating the same thing every day regardless of what you're doing, you match your nutrition to the specific demands of each training session. Day by day, meal by meal.
Hard training day: You fuel for performance. Two grams of carbs per kilogram of body weight in the pre-ride meal. 90 grams of carbohydrate per hour during the ride. You eat big because you need to hit your power targets and recover properly.
Easy day or rest day: You pull back on carbohydrates. Plenty of protein, good fats, vegetables. You're still eating well — you're not starving — but you're not loading glycogen you don't need.
The weekly calorie deficit takes care of itself. You never feel deprived because on the days you need food, you're eating loads of it.
The Five Shifts That Changed Everything
These are the five specific changes I made over 12 weeks.
Shift 1: Stop Eating the Same Thing Every Day
For years I was on autopilot. Same breakfast, same lunch, same dinner — whether I was doing a 5-hour Sunday spin or sitting at my desk editing podcasts. The moment I started matching carb intake to training load, the weight started coming off. Not because I was eating less overall, but because I was eating the right amounts at the right times.
Shift 2: Fuel Hard Sessions Properly
This was counterintuitive. I used to think eating less before a hard ride would help me lose weight faster. Totally backwards. When I started eating 170 grams of carbohydrates before my hard sessions and taking 90 grams per hour during the ride, my power numbers went up, my recovery improved, and because I wasn't coming home destroyed, I wasn't binge eating afterwards. Fewer total calories over the week, even though I was eating more around training.
Shift 3: Train the Gut
Your gut is a trainable organ. Most cyclists treat their tolerance as a hard limit. If you can only handle 40 grams per hour, that's your starting point — not your ceiling. Build from there. By week eight, I was comfortable at 90 grams per hour with zero gut issues. Our in-ride nutrition guide covers the gut training protocol in detail.
Shift 4: Stop Being Afraid of Food on Rest Days
Rest days are when your body rebuilds. You still need adequate protein and good nutrition. You just pull back on carbohydrates. I was eating three solid meals on rest days. Never hungry. Never miserable. Just not eating bowls of pasta while sitting on the couch.
Shift 5: Commit for 12 Weeks
I weighed myself once a week. Monday morning, same time, same conditions. It wasn't linear. Week one I lost 1.5kg. Week two, nothing. Week three, half a kilo. Week four, I went up and nearly panicked. But I trusted the process, understood the science, and from week five onwards it was consistent. Half a kilo to a kilo per week, all the way down to 79kg.
The Week Four Mistake That Nearly Ruined Everything
In week four I got greedy. The weight was trending down, training was going well, so I thought: what if I go low carb on a hard day too? Surely that'll accelerate things.
I went out for my Tuesday interval session with minimal carbohydrates. Didn't eat properly beforehand. It was a disaster. Couldn't hold any power targets. Blew up halfway through. Came home and ate everything I could find. Next morning, the scale was up a kilogram.
That's when the framework really clicked. Under-fuelling a hard session doesn't just ruin the session. It ruins the 48 hours that follow. You don't recover properly. You overeat to compensate. You enter a guilt spiral. The whole system collapses.
You earn the deficit on easy days. You invest fuel on hard days. The moment you try to cut corners on both, it falls apart.
How to Start This Week
- Look at your training plan. Identify which sessions are hard (intervals, tempo, threshold) and which are easy (endurance, coffee rides, recovery)
- Work two meals backwards from hard sessions. The meal before and the meal the night before — that's where you load carbohydrates. Aim for 2g/kg body weight
- Fuel during hard sessions. Start at 40g carbs per hour, build toward 90g over 8 weeks
- Pull back on easy days. More protein, more vegetables, fewer starchy carbs. Still eating well — just not loading glycogen you don't need
- Be patient. Give it 8 weeks minimum. Weigh yourself once a week. Track power. Trust the process
Key Takeaways
- Conventional cycling weight loss (calorie restriction, fasted rides, cutting carbs) is counterproductive for most cyclists
- The "fuel for the work required" framework matches nutrition to training demands, day by day
- On hard days, eat big — 2g/kg carbs pre-ride, 90g/hr during. On easy days, pull back naturally
- The weekly calorie deficit takes care of itself without ever feeling like a diet
- Your gut is trainable — start at 40g/hr and build to 90g/hr over 8 weeks
- Never under-fuel a hard session to create a deficit — it ruins the session AND the 48 hours after
- Results take 8-12 weeks of consistency. It's not linear. Trust the process
- This is the same framework used by roughly 40% of World Tour teams
- Use our Race Weight Calculator to find your target range
- Check your energy availability to make sure you're not under-fuelling
- For the common mistakes that undo weight loss, read 5 fixable reasons you can't lose weight
- Our body composition guide explains why the scale doesn't tell the full story
- Use the Fuelling Calculator to set your carbs-per-hour targets for hard days
Frequently Asked Questions
Can you lose weight while cycling without losing power?
Yes. The "fuel for the work required" framework matches nutrition to training demands. You eat big on hard days (fuelling performance) and pull back naturally on easy days (creating a deficit). The calorie deficit happens across the week without ever under-fuelling a quality session.
What is fuel for the work required?
A periodised nutrition approach where carbohydrate intake matches daily training demands. On hard training days, you load carbs (2g/kg pre-ride, 60-90g/hr during). On easy or rest days, you reduce carbs naturally and eat more protein and vegetables. The weekly calorie balance takes care of itself.
Should cyclists count calories to lose weight?
No. Calorie counting tends to create a uniform restriction that under-fuels hard sessions and over-fuels easy days. The fuel for the work required approach is simpler and more effective — match food to training, not to a daily number.
How long does it take to lose weight while cycling?
Expect 0.5-1kg per week of sustainable weight loss using the fuel for the work required framework. That's 4-8kg over a 12-week period. Faster than this risks muscle loss and performance decline. Use our Race Weight Calculator to set a realistic target.
