This video features Tudor Pro Cycling team's exercise physiologist and nutrition expert Tim Podlogar in a deep conversation with host Anthony about 'how pro cyclists maintain such lean, healthy bodies, and what pitfalls amateurs should absolutely avoid when trying to follow suit.' The main topics are body fat percentage, the relationship between weight and power, smart fueling strategies, and ultimately how to perform without compromising health.

1. How Lean Are Pro Cyclists Actually? Differences by Type and Changes Over Time

From the start, Anthony asks about the myth that "WorldTour riders are only at 5% body fat." Tim Podlogar reveals that at Tudor (and previously at Bora), they manage body fat using skinfold measurements rather than DEXA scans.

He explains:

"We used to think climbers were particularly leaner while classics riders or sprinters were less so. But recently, classics riders are just as lean as mountain riders, and nutrition management has become so refined that everyone maintains very lean body composition overall."

• Sprinters: May have relatively more muscle mass and body fat, but are leaner than ever before
• Climbers, GC (general classification) riders, classics riders: Currently at nearly identical levels of leanness

"To improve power-to-weight ratio, climbers in particular need to reduce muscle mass as well, while all-rounders carry a bit more muscle with the same body fat."

2. Weight Changes and Power: Does Gaining Muscle Really Help?

To the common amateur worry, 'If I lose weight, won't I lose power too?', Tim answers:

"If you increase 'muscle' in your body weight, absolute power naturally goes up. The problem is that the energy deficit created during 'dieting' temporarily reduces power output. If you return to a normal diet without losing muscle, power recovers quickly."

• Absolute power can actually increase thanks to added muscle.
• In an energy-deficit state, riding immediately drops power output, but this isn't a problem with 'power itself' -- it's a temporary phenomenon caused by insufficient energy to generate that power.

"You're not actually 'losing power' -- it's more that your ability to 'access that power' has decreased."

3. Pro Fueling Strategy vs. Smart Amateur Dieting: Fuel for the Work

How should you structure your diet to achieve both weight loss and maintained performance? The key concept here is 'fuel for the work required' -- supply fuel that exactly matches the training you need to do.

Tim Podlogar's advice:

• High-intensity training (intervals, etc.): You must consume sufficient carbohydrates before and during
• Low intensity (Zone 1, Zone 2) or rest days: Reduce energy intake and actively create a calorie deficit

"The best approach is to never be depleted before important training sessions, and create energy deficits only on easy days. About 500-700 kcal per day is a safe range."

• Common amateur mistake: On weekends, thinking 'I exercised a lot so I'll eat less at dinner,' while barely eating any fuel during the actual workout, then binge eating after getting home

"If you don't properly fuel up the day before and during the ride, muscle/liver glycogen bottoms out and you end up binge eating. You must replenish nutrition during and after sessions to avoid overeating later."

4. Basal Metabolic Rate (BMR), Calorie Calculation, and Variables

This section covers the difficulty of calculating daily energy expenditure and rough calculation methods applicable to real life. According to Tim:

"Even using every formula, individual differences are enormous (efficiency, non-exercise activity, post-exercise metabolism, etc.), so experiential trial and error is essential."

• Exercise calories: 'Energy burned during exercise' measured by power meter is accurate, but individual differences arise due to exercise efficiency variations (18-24%)
• Basal metabolic rate: Estimated calorie burn 'just lying still' using formulas like Harris-Benedict
• Total expenditure calculation method:
  1. Exercise energy (calories or kJ, per power meter) + (remaining hours BMR x activity factor (1.2-1.4))
  2. Since 'exercise time' within the 24-hour day is already calculated separately, only multiply the remaining time by 'BMR'
• Reference day: A 'midnight-to-midnight' daily basis often doesn't match actual training cycles, so a '24-hour cycle between training sessions' is more efficient

"Following this method, if you've already supplied enough energy during the ride, just add the basal metabolic rate for the remaining time to get a rough daily energy balance."

5. On-the-Bike Fueling (Carbohydrate) Intake and Individual Differences

Now we move to the crucially important topic of intra-ride carbohydrate intake. Recently, pro athletes consume at least 60g per hour, and up to nearly 200g, dramatically increasing fuel intake. However, since individual absorption capacity varies greatly, the emphasis is that everyone shouldn't blindly follow the same approach.

"Some athletes reported absorbing 120g of carbohydrate per hour, but in reality, race dynamics led to overfeeding in some cases. Rather than being absorbed, it sat unused, or muscle glycogen depletion actually increased."

Individual Differences in Absorption Rate

• Glucose only: Wide variation from 30-90g per hour
• Glucose + fructose combined: Recommended amounts vary from 50-170g per hour
• Limiting factor: Mostly intestinal absorption (transporter) limitations
• Trainability: Some evidence that fructose absorption responds to training; glucose less so

"If an athlete blindly consumes 200g without knowing their own absorption capacity, some of it may just sit in the gut or exceed absorption limits and cause problems. You must find optimal intake through individual experience and experimental trial and error!"

Practical Tips

• Too much carbohydrate = paradoxically increased muscle glycogen consumption
• Beyond absorption limits: GI distress, no benefit, potential problems from accumulation

6. Fat Metabolism (Fat Max), Fasted Training Trends, the Haribo Debate, and Ketone Supplements

How to utilize fat metabolism for weight loss or performance improvement is also an important topic.

• Fat Max definition: 'The exercise intensity at which you burn the most fat'
• Trend changes: Fasted low-intensity Zone 2 training was once popular; recent consensus leans toward fat oxidation rates naturally increasing as overall fitness improves.

"Trying to force fat burning by extremely restricting energy (complete fasting, etc.) during training causes recovery impairment and poor subsequent sessions. Rather, as overall fitness goes up, fat metabolism ability follows."

• The truth about Haribo: "Haribo is great! When riders got tired of other flavors, putting various Haribo gummies in the musette bags was a huge hit."

  "On big mountain stages where you need 20-21g/kg of carbohydrate per day, Haribo is your best friend."

• Views on ketone supplements: "I don't really recommend them. They're expensive, and for that money you're better off investing in a good chef and quality ingredients. If everything is already perfectly dialed in, a 0.1% gain might be possible, but it's not a priority."

7. Throughout the Season and Health: The Dilemma of Being Too Lean

Do pro riders stay lean throughout the entire season?

• In the past, some riders started the season 10kg overweight and rapidly cut weight through the Tour de France season, but current riders maintain a relatively consistent level of leanness year-round, with differences in the amount of weight cut between GC riders and domestiques.

"These days most riders stay comparatively lean throughout, dropping a bit more at peak periods and gaining slightly back toward the end of the season. Body fat management is rigorously executed, but they manage each rider's optimal point data (skinfolds, hormones, etc.) to avoid going too far."

Risks of Excessive Weight Loss & Health Indicator Monitoring

• Key monitoring:
  • Testosterone and other hormone levels, morning weight changes, recovery indicators (sleep, HRV, etc.)

"When morning weight drops or rises sharply, it could be a warning sign about calorie/recovery status. Accumulated fatigue can actually cause weight to increase."

• Amateur checkpoints:
  • Sharp morning weight changes, increased fatigue or poor recovery compared to normal -- immediate review needed

8. Training Effects, Experience, and Science: The Reality of Optimization

The video concludes with a discussion about 'the wide gap between training stimulus and results (adaptation).' Tim reflects:

"Experienced coaches' intuition, long-term observation records, and directly asking athletes about 'how they feel and their leg condition' are sometimes the best data. Not all metrics are perfectly predictive, and external conditions and environmental variables are enormous, so coaching is a domain where science and art coexist."

"Even giving the same stimulus always produces different responses next time. People are never the same person day to day. Ultimately, 'feel' and 'communication' are really important for tracking adaptation."

Closing

The secret to pro cyclists' 'extremely lean bodies' lies in daily, meticulous balancing of fuel (food), training volume, and recovery, and careful monitoring based on each individual's body data. The biggest lesson amateurs should take away is the importance of smart fueling matched to training volume and intensity, and a long-term, systematic approach rather than short-term drastic weight cuts.

"The most important thing is to find the optimal point for your own body rather than blindly copying others' methods, consistently observe and adjust your data, and above all, enjoy your sport in a healthy way."