Fueling Performance

You train hard. You consistently knock out the intervals from your training plan, and you push through your Sunday long run without fail. You show discipline with your nutrition, too: You often skip that piece of cake, eat plenty of fruits and vegetables, and make sure you get a solid portion of protein. You take your Omega-3 capsules and dutifully supplement vitamin D in the winter. On intense training days, you reliably put enough carbs on your plate.

You’re doing everything right—or so you think.

But the reality looks different: your power output is stagnating, and your 10k PB is already a few years old. You often sleep restlessly after hard sessions, wake up feeling completely drained, and you're already dreading the upcoming cold and flu season.

Sound familiar?

No need to despair. Nutrition is just as complex as our bodies, making it highly individual. Mindless calorie counting often leads to a dead end, because what works for one person might not work for another. Doing everything 100% "perfectly" is simply impossible anyway.

Nevertheless, there are fundamental biological principles that apply to every human organism. The better we understand these rules, the more precisely we can tailor our nutrition to our athletic goals.

The real challenge lies in finding your own personal path. If we can integrate these principles into our daily lives so that they become second nature, getting it right 80 to 90% of the time is completely sufficient. We can (and should) use the remaining 10 to 20% for our mental well-being. Because if you build a foundation that is 90% solid, a few small exceptions won't bring it crashing down.

That's exactly what we will be exploring over the coming weeks in this series. We will take a detailed look at nutrition in the context of sports and answer the following questions:

• Macronutrients: What does the perfect interplay of carbohydrates, fats, and proteins look like?

• Weight Management: How does it actually work in a high-performance context?

• Blood Markers: Which parameters should you have checked regularly?

• Supplements: Which dietary supplements have a scientifically proven, genuine performance-enhancing effect?

We will kick things off next week with the first part of our series. In it, we will learn about and understand one of the most important biological principles of all: energy availability.