The Hex classifies the muscle as being in one of four zones:
2. Blue (recovery): when the oxygen delivery is greater than the consumption in the muscle, meaning the athlete’s muscles are recovering.
3. Green (steady state): when the oxygen delivery and consumption in the muscle is balanced, meaning the athlete is training at a sustainable pace.
4. Orange (approaching limit): when the muscle begins consuming more oxygen than what is being delivered, meaning the athlete is nearing their body’s limit.
5. Red (limit): when the muscle is consuming significantly more oxygen than what is being delivered, meaning the athlete is training at an unsustainable pace.
These zones can be used to pace yourself and manage training intensities when your train!