Training stress accumulates across multiple systems—cardiovascular output, muscular fatigue, cortisol elevation, and metabolic demands all compound when you're pushing volume or intensity. Optygen from First Endurance addresses adaptation at that systemic level using two Himalayan adaptogens, Cordyceps and Rhodiola, originally employed by Tibetan Sherpas navigating Everest's altitude and physical demands. These herbs modulate cortisol response, which governs how your body handles sustained physical stress rather than just the workout itself.

The formula delivers measurable shifts in lactate threshold timing. Clinical testing on trained distance runners showed 30% increases in time to lactate threshold after consistent use—that's the margin between holding pace through attacks and watching the group ride away. Cordyceps and Rhodiola work alongside the ATPro Matrix, which supplies ribose, phosphate compounds, and pyruvate to support cellular ATP production. This isn't about peak wattage—it's about maintaining power output deeper into efforts when glycogen depletion and acidosis typically force backing off.

Chromium handles glucose and fatty acid metabolism, helping partition fuel more efficiently during prolonged efforts. When you're training at high volume, chromium's role in insulin function helps preserve muscle glycogen and encourages fat oxidation, which matters for body composition over training blocks and for managing energy availability during long weekend rides.... Read More