Estimated read time: 3–4 minutes By: Evolve Physical Therapy & Wellness  Why Fatigue Matters More Than You Think  If you’re training for HYROX or any other fitness event, you already know fatigue is part of the game, but how you manage it determines whether you adapt or break down.  New research in hybrid and endurance athletes shows that training under chronic fatigue or “low readiness” states doesn’t just limit performance — it rewires how your body responds to training. (Aydapage et al., 2024)