Training and strategies

Ultra-trail racing demands far more than simple physical preparation. It is a true mental, strategic, and nutritional challenge. Guillaume Klein, coach and Nutri-Bay ambassador, has a powerful message for all ultra-trail runners. Whether you are a beginner or an experienced runner, Guillaume Klein’s recommendations will help you better manage your preparation, optimize your nutrition, and adapt to the unique challenges of ultra-trail.

As we age, our bodies undergo changes that can affect our running performance. How do the different stages of life affect runners’ muscles, recovery, and nutritional needs? We also explain the strategies to adopt to continue to perform at your best by adjusting your training, diet, and recovery habits. Learn to understand and manage these changes to maintain a healthy and effective running practice...

Lactic acid is often misunderstood, especially by athletes who associate it with pain and excessive muscle fatigue. Let’s debunk the most widespread myths and clarify the true role of lactic acid during physical exertion. We explain how it forms, its effects on performance, and the scientific facts that will give you new knowledge to approach your training sessions and competitions.