Hyrox events combine running with eight functional fitness stations over 8 kilometers. Athletes need a fueling strategy that accounts for both aerobic endurance and anaerobic power demands. The carbs-versus-protein debate misses the point. You need both.
Carbohydrates remain the primary fuel for high-intensity efforts. Your muscles rely on glycogen stores during the running segments and station work. Men's Health recommends consuming 6 to 10 grams of carbs per kilogram of body weight daily in training phases, depending on workout intensity and volume. For a 180-pound athlete, that's roughly 490 to 820 grams per day.
Protein supports muscle repair and adaptation after the combined stress of running and strength work. Aim for 1.6 to 2.2 grams per kilogram of body weight daily. This range addresses both aerobic training and the muscle damage from functional fitness stations like wall balls, rowing, and sled pushes.
Timing matters. Consume 1 to 4 grams of carbs per kilogram of body weight 1 to 4 hours before the event. A 180-pound athlete might eat 200 to 350 grams of carbs two to three hours prior. This tops off muscle glycogen without causing digestive distress.
During the event, ingest 30 to 60 grams of carbs per hour through sports drinks, gels, or chews. This external carb source sustains performance as internal glycogen depletes over the 60 to 90 minute effort.
Post-event nutrition accelerates recovery. Consume carbs and protein within 30 to 60 minutes. A ratio of 3 to 4 grams of carbs per gram of protein works well. A chocolate milk or