KULG founder & CEO Maris Heinaru featured in Jooksja magazine

In the latest issue of Jooksja magazine, KULG founder and CEO Maris Heinaru shares a personal reflection on her 28th marathon and the lessons learned from an ambitious training experiment.

Attempting to accelerate her marathon preparation through an intensive training camp, Maris reflects on an experience that led to measurable improvements in aerobic fitness but also highlighted the risks of increasing training volume and intensity too quickly. The experiment became a valuable reminder that performance is more than fitness alone - recovery, muscle readiness, and long-term consistency matter just as much.

The article explores how Maris combined years of training experience with insights from KULG, the coaching and training platform that helps runners and coaches understand performance, training load, and injury risk. During the training camp, KULG repeatedly signalled that her workload was pushing the limits of sustainability, providing a real-world example of the importance of interpreting data in context and paying attention to early warning signs.

Ultimately, the marathon reinforced a lesson that applies far beyond running: progress is not always achieved by doing more. Sometimes the smartest path forward is a gradual and sustainable one. Maris reflects on the challenge of balancing ambition with patience and explains why learning from setbacks is an essential part of long-term development for every athlete.

Read more from Jooksja. Article below.