Training for a Hyrox? Registered Dietitian Reveals the Common Nutrition Mistakes That Can Sabotage Race Day Performance
More and more people are signing up for Hyrox races this year. And if you're one of the brave athletes taking on the challenge, you've likely already started looking into training plans. Though training hard is essential to race day success, nutrition plays an equally important role in performance. Think about the last time you had a tough workout that felt harder than it should have. Maybe you felt sluggish and weaker than usual, only to later realize you hadn't eaten enough the day before. Those mistakes become even more emphasized when training for a Hyrox, which combines eight functional workout stations with nearly five miles of running.
"I think people underestimate the impact quality nutrition can have on performance," says Amanda Blechman, RD, Director of Nutrition & Scientific Affairs at Danone USA. "Prioritizing nutrition and hydration before, during, and after a demanding fitness event will not only impact how you feel the day of but also how you recover."
Hyrox training places significant demands on the body, especially if you're new to such high-intensity training. To keep performing at your best, it's important to replenish what your body loses during training. After all, your tank can't run on empty. That means replacing fluids after workouts and consuming foods that provide protein, carbohydrates, and electrolytes.
Protein helps repair muscle tissue. Exercise creates microscopic damage to muscle tissue, and the amino acids from protein help rebuild and strengthen those muscles. Carbohydrates restore glycogen, the stored form of energy your body relies on during exercise. After training, carbs are broken down into glucose and used to replenish depleted glycogen stores. Electrolytes, including sodium, potassium, and magnesium, help replace important minerals lost through sweat.
"Many of my favorite post-workout foods are dairy foods like Greek yogurt, dairy-based protein shakes, and chocolate milk because all of them provide this post-workout trifecta and make it easy to get in nutrients you need," Blechman explains.
If you're already strength training and plan to continue lifting while adding Hyrox-specific work, your nutrition priorities largely stay the same: consume enough protein to support muscle recovery, carbohydrates to replenish energy stores, and fluids and electrolytes to stay hydrated. The main difference is that longer, more intense endurance exercise may require additional carbohydrates, fluids, and electrolytes to replace what your body burns and loses through sweat.
Research suggests that meeting your daily protein needs and distributing that protein evenly throughout the day is one of the best strategies for supporting muscle growth and recovery. Many Americans consume the bulk of their protein at dinner, but spreading intake across multiple meals may be more effective, especially with higher volume training. To put that into practice, the International Society of Sports Nutrition (ISSN) recommends consuming protein-rich foods roughly every three to four hours throughout the day.
"Depending on an individual's protein needs, this could be achieved via a high-protein Greek yogurt with breakfast, a chicken salad for lunch, salmon for dinner, and snacks like apples and peanut butter, string cheese, hard-boiled eggs, or nutrient-dense protein shakes between meals," Belchman says.
Related: Trainer Shares HYROX Sandbag Lunge Hack to Help You Keep Moving Under Extreme Fatigue
This story was originally published by Men's Journal on Jun 18, 2026, where it first appeared in the Nutrition section. Add Men's Journal as a Preferred Source by clicking here.
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This story was originally published June 18, 2026 at 11:46 AM.