Training & Performance
Training & Performance articles and guides for endurance coaches.
Training & PerformanceMarch 18, 2026
Heat Stress and Your Training: What the Temperature Isn't Telling You
A humid 28°C day can load the body harder than a dry 32°C one. Here's the measure that captures that, the categories it gives, and exactly how it changes an athlete's recorded training load.
Training & PerformanceMarch 10, 2026
Training Status Explained: How Simma Reads the Pattern Behind a Form Score
A form score says where an athlete is today. Training status reads the shape of how they got there. Here is exactly how Simma computes it, per athlete and per sport, and what it can't know.
Training & PerformanceMarch 5, 2026
Training Load Explained: ATL, CTL, TSB and What Simma Does With Them
What fitness, fatigue and form mean in the performance management model, exactly how Simma computes them, what they can't see, and why the athlete never gets shown the number.