The Silent Effort

In this episode of The Silent Effort, host Casper Hessellund sits down with Thomas Bundgaard, bike fitter and performance coach with the Uno-X cycling team, to explore what makes a bike fit work, not just on paper, but out on the road.Thomas explains why there’s no single “optimal” position for every rider. A good fit considers the whole person: their goals, mobility, strength, riding history and how their body responds under effort. Comfort, he argues, isn’t about sitting upright or taking it easy; it’s about being able to ride hard for hours without avoidable problems getting in the way. That can mean looking beyond angles and measurements to saddle choice, cleat position, cycling-shorts padding and the way the rider moves on the bike.The conversation also gets into crank length and performance. Thomas shares how he tests different lengths with riders, and why the right choice depends on the individual, their cadence and the demands of their event. One case study showed a notable difference at LT2 with shorter cranks, alongside a more stable position. The discussion makes clear that one rider’s result isn’t a universal prescription. Changes need time, testing and feedback.Casper and Thomas also discuss when strength and mobility work may help cyclists, practical high-torque training, and how to approach the winter season without burning through motivation too early. Thomas’s advice is refreshingly measured: work on the areas you tend to neglect, make changes thoughtfully, and keep training balanced and enjoyable.A thoughtful conversation for cyclists, coaches and curious riders interested in bike fitting, cycling performance and the details that can make long days in the saddle feel and work better.

The smartest Ironman gains are made when race season ends, not when it starts. Lars breaks down how age-group triathletes can use the off-season to return stronger, faster, and better prepared for their next race.If you’re training 10 to 15 hours a week and want to race better next year, this conversation offers a practical playbook: how much recovery you may need, why strength training matters, and how to use the off-season to address your weaknesses instead of simply trying to maintain fitness.In this episode, you’ll discover:- How Lars approaches recovery after an Ironman- Why strength training supports performance, injury prevention, and long-term health- How to use VO₂ max work while keeping Ironman-specific durability in mind- Why the off-season is a valuable time to work on swim technique- How trail runs, gravel rides, and other activities can build strength and keep training enjoyable- The basics that matter for recovery: sleep, food, and thoughtful training choicesLars also discusses the trade-offs of winter training: when to emphasize intensity, why cooling is important for indoor workouts, and how to approach heat training, altitude, and recovery methods without getting distracted by trends.Casper Hessellund brings the athlete’s perspective, asking questions about how much to train, what to change after a race season, and how to build fitness without carrying too much fatigue into the next block.Lars is an ambitious triathlete and full-time coach. Together, Casper and Lars share practical ideas for making the off-season productive while leaving room to rest, experiment, and enjoy training.This episode is for triathletes and endurance athletes who want to make their off-season count and head into the next season with a smarter plan.

Most triathletes obsess over getting lower, narrower, and more aggressive - and leave free speed on the table. Kristoffer Visti Graae, ex-professional triathlete and founder of AeroGain, breaks down why the fastest setup is often not the one that looks fastest.From cockpit shape and stack height to helmet choice, shoulder mobility, and bottle placement, this conversation reveals how tiny positioning changes can create huge time savings - or quietly cost you watts over an Ironman bike leg.You'll discover:- Why the rider, not the bike, creates most of the drag- When going higher or wider can actually be faster- How arm pad width, shoulder position, and head posture interact- Why custom cockpits and helmets only work when they match the athlete's body and race demands- How AeroGain turned real-world testing into products used by triathletes worldwideKristoffer also shares the origin story behind AeroGain, from self-experimentation and velodrome testing to the now-common bottle-under-the-suit breakthrough and the rule changes that forced the next wave of innovation. He explains why aerodynamic gains are never just about the tunnel or the numbers - they have to survive real training, race-day fatigue, and the exact distance you plan to ride.If you care about triathlon speed, fit, or equipment, this episode will change how you think about "faster." Essential listening for age-groupers chasing free speed and for elite athletes looking for the last marginal gains.

Performance does not break down first. Health does. Belgian cyclist and coach Toon Heirbaut reveals why so many athletes are training harder while actually becoming less capable, and what the right foundation looks like when you want both results and resilience.If you have ever felt strong on paper but constantly sick, flat, or one hard session away from crashing, this conversation will hit home. Casper Hessellund and Toon unpack the hidden cost of stress, poor recovery, and bad fueling - and why the biggest mistake in endurance sport is often chasing more training instead of fixing the system underneath it.You’ll discover: why stress is the real number one performance limiter, how to spot the earliest signs of under-recovery before your body fully breaks down, and why resting heart rate and HRV matter more than most athletes realize. Toon also breaks down the difference between being undertrained and under-recovered, how amateurs misread fatigue, and why elite athletes can tolerate more load simply because they carry less life stress off the bike.We also get into nutrition and fueling strategy in a way most cyclists never hear. Toon explains when carbs should be pushed hard, when fat oxidation should be trained, why zone 2 is usually much lower than people think, and why “no testing, no training” is non-negotiable in his coaching philosophy. He shares why performance tests matter, how to use them to avoid the grey zone, and why the numbers often tell a very different story than your feelings do.Sleep is another major piece of the puzzle, and Toon lays out the practical side of recovery: how cortisol and melatonin need to work together, what actually helps deep sleep, and why a consistent wake-up time can matter more than chasing a perfect number of hours. He also shares the morning routine he uses himself, including light exposure, movement, hydration, and focus work before training.This is essential listening if you are an endurance athlete, coach, or ambitious amateur who suspects that the answer is not more discipline, but better management of stress, sleep, recovery, and mindset. By the end, you’ll have a much clearer view of what actually builds durable performance - and what quietly destroys it.Casper Hessellund hosts Toon Heirbaut, a Belgian cyclist and coach who works with athletes on performance, recovery, and health after dealing with his own long stretch of illness and imbalance.

The reality of being a professional triathlete is about more than podiums, sponsors, and traveling the world. Behind the highlights are demanding training weeks, financial pressure, injuries, loneliness, and the mental challenge of continuing to perform when things don’t go to plan.In this episode of the Silent Effort Podcast, Casper Hessellund talks with professional triathlete Valdemar about what it really takes to pursue elite endurance sport. Valdemar shares how he balances training with a part-time job and coaching, what a typical week of training looks like, and why building a career in triathlon can be financially uncertain, even for athletes competing at a high level.They also get into the tough calls athletes face: when to keep pushing and when to stop, how to handle a DNF, and why training through pain isn’t always a sign of strength. Valdemar explains the importance of listening to your body, balancing performance data with your own instincts, and making smart decisions in the moment rather than blindly following a plan.In this conversation, you’ll hear about:- What a demanding triathlon training week can look like- The financial realities of trying to make a living as a professional athlete- The sacrifices elite sport can require from relationships and everyday life- How to recognize the difference between soreness and pain that needs attention- Why knowing when to ease off can be just as important as knowing when to push- The mental pressure of racing against the best—and being close to the top without feeling there yet- How trust, patience, and daily decisions help athletes keep moving forwardFor Valdemar, triathlon is a decision sport: success depends not only on fitness, but also on the choices made in training, recovery, competition, and life. This is an honest conversation about the unseen work behind performance, and the grit it takes to keep chasing a goal that may still be just out of reach.

Fuel Smarter, Ride Faster: A Practical Guide to Endurance FuelingFueling is not a marginal gain, it can make or break your performance. Mathias returns to discuss how much to eat, what to eat, when to eat it, and why training your gut matters just as much as training your legs.If you’ve ever bonked late in a race, felt too full at the start, or wondered why some riders can handle 120 grams of carbohydrates per hour while others struggle at 60, this conversation offers practical ideas to help you plan your fueling. Casper Hessellund and Mathias cover race-specific nutrition, hydration, sodium, and what can happen when your body runs low on carbohydrates.In this episode, you’ll hear about:- Why the balance of glucose and fructose can affect how well you tolerate higher carbohydrate intake- What gut training involves, how long adaptation may take, and how to practice fueling regularly- How to plan meals before a ride or race, including examples of carbohydrate-rich foods- Why eating too much or too close to a session may leave you feeling uncomfortable- How fueling needs differ between an easy Zone 2 ride and a race-specific workout- How to estimate your sweat rate and think about fluid intake in different conditions- The role of sodium and electrolytes alongside carbohydrates- What to consider when refueling after a hard race or training session- Why athletes may overfuel easy days and underfuel hard ones- How ongoing underfueling can affect recovery and performance- Why being as lean as possible is not always the best route to better performanceThe conversation also explores practical ways to build a fueling plan around your training week, avoid relying on thirst as your only reminder to drink, and balance performance goals with weight management. Mathias shares why good preparation can make it easier to follow through during a ride, and why fueling well is about more than chasing marginal gains.Whether you’re preparing for a race, training for long hours, or simply trying to make better decisions on the bike, this episode offers a useful starting point for fueling with more intention.

What if the reason your training feels flat is not your fitness, but how you fuel every hour around the ride? Former elite cyclist and nutrition founder Mathias Busk Sælgen breaks down the underfueling mistakes that keep amateur riders tired, stuck, and strangely worse after "hard" sessions.Mathias, now the owner of Noutron and a former road and gravel racer, shares what he got wrong when he was racing at 60 kilos, why eating less during the week can quietly sabotage your results, and why the biggest performance gains often come from planning, not just pushing more watts. If you train after work, try to "save" calories for later, or wonder why you keep bonking on longer rides, this conversation will change the way you think about carbs.You'll discover:- Why 60 grams of carbohydrates per hour is a far smarter starting point than chasing pro-level numbers- How muscle glycogen and liver glycogen decide whether you feel strong or empty- The difference between glucose and fructose, and why the right ratio matters more than most riders realize- Why 90 grams per hour is possible for some athletes, but not automatically right for you- How heat, dehydration, and gut training change what your body can actually absorb- Why timing your post-ride meal can matter as much as what you eat during the rideWe break down the full-picture approach to fueling: before the ride, during the ride, after the ride, and across the whole week. Mathias explains why a one-hour Zone 2 ride usually does not need carbs, why a four-hour ride after a long workday is a very different story, and how amateurs can accidentally turn a great training day into a recovery disaster by eating at the wrong time.This is especially useful if you are a serious amateur cyclist, a gravel racer, or someone trying to balance training with work, kids, and real life. The difference between consistent progress and constant fatigue often comes down to one thing: having a plan.Perfect for riders who want more energy, better recovery, and a smarter way to fuel without copying the pros blindly.

Most people quit long before their body actually does. Volker Voit reveals what ultra-endurance really looks like when the real battle is not the bike, the watts, or the distance, it is the mind, the fuel, and the ability to keep going when everything starts to unravel.Volker is an ultra cyclist and triathlete who did not start sports until age 32, after years of heavy smoking and drinking. Now, he is chasing record attempts across Germany and Portugal, pushing through 555-kilometer and 740-kilometer rides, night riding, sleep deprivation, cold, and the kind of discomfort that forces most athletes to stop. Casper Hessellund presses him on how far a human can really go, and Volker’s answers are as practical as they are eye-opening.You’ll discover:- Why ultra races are expected to go wrong, and how to adapt when nutrition, weather, or roadblocks derail the plan- How Volker races 60 to 70 percent by mental strength, not just physical fitness- Why he uses checkpoints and mental milestones instead of obsessing over every kilometer- The nutrition strategy that keeps him moving for 20-plus hours, including liquid-only fueling and 120–130 grams of carbs per hour- Why he believes most amateurs fail by chasing numbers instead of racing by feel- The equipment upgrades that matter most, including tires and overshoes, and the gear people overpay for- How he turned a corporate career and a late start into a life built around cycling, coaching, and content creationVolker’s perspective is especially valuable if you are an age-group athlete, an aspiring triathlete, or someone who keeps telling yourself you are “too late” to start. He makes a powerful case that the body can do far more than most people believe, but only if you train the mind, fuel properly, and stop copying elite athletes without considering your own reality.This conversation is a masterclass in endurance, adaptation, and perspective. If you want a smarter way to think about training, racing, and what is actually possible for ordinary athletes, this episode belongs on your list.

A surgery that nearly ended his career becomes the launchpad for an Ironman breakthrough. Lars Schmidt reveals how he went from limping through rehab and nearly selling his bike to racing his way back to the podium mindset, with a brutally practical blueprint for age-group athletes who want big results without blowing up their lives.Casper Hessellund sits down with Lars Schmidt, an ambitious age-group triathlete and coach, for a raw conversation about comeback, patience, and what it actually takes to rebuild after injury. Lars shares the full arc - from junior national-team racing and losing motivation, to military life, weight gain, a long return to sport, and finally the surgery that exposed the real problem behind years of pain: compartment syndrome.You'll discover:- Why his recovery started with just 15 minutes on the home trainer and a strict day-to-day progression- The simple rule he used to decide when to increase load: if he could do it twice, he could move up- Why he focused heavily on volume below LT1 instead of chasing hard sessions too early- How he used swimming, biking, and strength training to stay progressing while protecting his legs- Why morning pain is one of the clearest warning signs of an incoming injury- What he thinks most age-group athletes get wrong about training volume, rest days, and "recovery runs"Lars also breaks down what sustainable Ironman training really looks like for busy athletes, arguing that many competitors can get excellent results on roughly 10 to 14 hours a week if they train smart, stay consistent, and stop copying full-time pros with full-time support systems. He gets specific about session choices, the biggest wastes of training time, how to adapt when life interrupts the plan, and why family, work, and sport can coexist when you get creative.If you've ever come back from an injury, felt your fitness slipping away, or wondered whether you need insane volume to be competitive in triathlon, this episode will reset your expectations. Perfect for age-group triathletes, coaches, and anyone trying to rebuild confidence in their body while still chasing ambitious goals.Casper Hessellund is the host of Silent Effort, where he explores the mindset, methods, and hidden work behind endurance performance. Lars Schmidt is an age-group triathlete and full-time coach, known for his practical approach to training, injury comeback, and sustainable Ironman preparation.

Endurance sports are booming, but most athletes are still chasing the wrong things. Professional triathlete, coach, and endurance entrepreneur Nicholas Chase reveals why getting faster is less about doing more, and more about getting the basics right - mindset, recovery, fueling, and the courage to ignore bad advice.Casper Hessellund pushes Nicholas on the biggest myths in modern endurance culture, from the obsession with "more" training to the influencer-fueled noise around gear, nutrition, and AI-driven marketing. Nicholas breaks down why so many athletes stall, how to spot the bullshit, and what actually separates the people who keep improving from the ones who burn out.You'll hear Nicholas explain:Why endurance performance is improving, and how much of it is really better tech and better measurementThe decision paralysis that keeps athletes stuck buying speed instead of building fitnessWhy stress plus recovery equals adaptation, and why skipping recovery leads to diminishing returnsHow to think about carbs, fuel timing, and why pro-level nutrition advice often fails everyday athletesThe role of genetics, discipline, race frequency, community, and training with people better than youNicholas also opens up about the business side of endurance sports, including athlete sponsorships, brand optics, and why some companies cut the people who actually build their success. And in one of the most honest parts of the conversation, he shares the silent effort driving his own life right now - taking care of others, funding athletes, and making sure no one who depends on him gets left behind.This is essential listening if you race, coach, train after work, or just want to get better without getting buried by misinformation. If you've ever wondered whether you need more intensity, more carbs, more gadgets, or just a better plan, this episode will reset how you think about endurance.