The performance you are looking for is composed of a variety of components and metrics, but if you only focus on FTP, heart rate zones, or keep training only according to your Rate of Perceived Exertion, you’ll miss accuracy and efficiency.
INSCYD takes into account, and connect to one another, the most important metrics for training purposes:
Lactate accumulation and recovery
Fat and carbohydrates combustion
VLamax (or glycolytic capacity)
Each of the above metrics measured by INSCYD is critical to performance and remember, each sport performance is predictable and can be broken down to these fundamental elements.