Dr Sharon Madigan, who's worked with Olympic athletes for years, breaks down why so many cyclists struggle with weight loss while maintaining training intensity. The real issue isn't calories in vs calories out—it's a mismatch between what you're eating and what your body actually needs based on your training schedule, recovery demands, and where you are in your training week.
Key Takeaways
- Stop thinking in days of the week and start thinking in 24-hour blocks. Two sessions on Saturday and Sunday aren't separate days—they're consecutive training stress that requires fueling across that entire period, not isolated daily nutrition.
- Under-fueling your training sessions leads to a yo-yo cycle: you get fatigued, crave high-calorie foods, binge, feel guilty, restrict again, then under-fuel the next session. Break the cycle by properly fueling based on training demand, not moral labels on food.
- As your cycling efficiency improves, you're working harder for the same output, which means your fuel requirements increase—not decrease. If you don't adjust nutrition upward as you get fitter, you'll plateau or hit the wall again.
- Carbohydrate is your immune system's primary fuel for white blood cells. Chronic under-fueling from restrictive diets doesn't just hurt performance—it suppresses immunity, increases cortisol, compromises bone health, and creates hormonal dysfunction.
- Match your fueling strategy to your gut tolerance. High-fiber 'clean' carbs like oatmeal might be harder to digest than white rice or cornflakes—choose what works for your individual system, not what sounds healthier.
- Intermittent fasting has a place for some athletes, but not in the middle of your heaviest training block. Train high-intensity sessions fed, and only consider fasted sessions on genuinely easy days with no other sessions nearby.
Expert Quotes
"There's no magic switch at 12 midnight right. Let's get out of this way of thinking about a day let's think about the period of time and really fuel that block of time."
"You're not that unlucky. If you're getting sick or picking up injuries regularly, you need to look at what you're doing—it's almost always an energy balance problem."
"Don't go looking for trouble. Work on the easy wins first—look at your week, nail your key sessions, and make sure you're going into them properly fueled. That's where the real gains come from."