If you've been anywhere near a gym this year, you've probably heard someone mention HYROX. The hybrid race format — running mixed with stations like sled pushes, wall balls and burpee broad jumps — has gone from niche to everywhere, and for good reason. It's tough, social and oddly addictive.
What gets less airtime is the quieter side of the sport: how you fuel and hydrate so you don't fade halfway through. You don't need a complicated stack. You do need a bit more than "just drink water".
Why HYROX is hard on your fuel tank
A typical HYROX race lasts around an hour for many people, sometimes longer. You're sweating hard, your heart rate stays up, and you're switching between running and strength work. That combo empties muscle glycogen (your stored carbohydrate) and flushes out electrolytes through sweat — mainly sodium, but also potassium, magnesium and a bit of calcium.
Plain water is brilliant for shorter sessions. Once you're into longer hybrid work, though, water alone can leave you feeling flat, crampy or just "off", even if you've been sipping plenty. Replacing what you've lost keeps nerves and muscles firing more smoothly, and it helps you actually absorb the fluid you're drinking.
What the practical science points to
Sports nutrition for endurance and hybrid training tends to land on a few simple ideas:
- Hydrate before you're thirsty. Starting a race or long session already a bit dehydrated is an easy way to slow yourself down.
- For sessions over about 60–90 minutes, many athletes aim for roughly 30–60g of carbohydrate per hour from drinks, gels or chews, to keep energy steadier.
- Electrolytes matter when you're sweating a lot. Sodium especially helps you retain fluid and keep muscle contractions feeling normal.
- Recovery is protein plus carbs plus fluid. After the finish, get something with protein (around 20–40g) and a solid carb source, and keep drinking until you feel human again.
None of that is glamorous. It just works.
Women and hybrid training: one extra note
Women are often at higher risk of under-fuelling, especially if training coincides with body-composition goals. Low energy availability over time can blunt recovery, mess with training quality and, for some, affect menstrual health. The fix isn't "eat more junk" — it's making sure protein, carbs around hard sessions and overall calories roughly match the work you're doing. Hydration sits in that same "basics first" bucket.
A simple race-week and race-day approach
- The day or two before: Eat normally with plenty of carbs from food you trust. Don't suddenly try a brand-new gel on race morning.
- Morning of: A familiar breakfast, water, and if you tend to sweat heavily, an electrolyte drink or tablet with breakfast or on the way to the venue.
- During longer training blocks: Water for shorter strength days; for long hybrid sessions, a carb-and-electrolyte drink can make the second half feel less like a slog.
- After: Protein shake or a proper meal, carbs, and keep sipping. That's when adaptation actually sticks.
Our picks for HYROX-style training
If you want something easy to drop in a kit bag, Applied Nutrition Endurance Hydration Electrolyte Tablets are a solid everyday option. One tablet in your bottle gives you sodium, potassium, magnesium and a little vitamin C without a sugary hit — handy for training days and race morning. Lemon & Lime and Vimto both go down easily.
For those longer sessions where you need energy as well as salts, Applied Nutrition Endurance Carb & Electrolyte Energy Powder mixes maltodextrin and fructose with sodium, potassium, calcium and magnesium. Mix it into your bottle for hybrid days that stretch past an hour, and you've covered the mid-session fuel and hydration piece in one go.
Prefer something ready-made for the gym fridge? Applied Nutrition Body Fuel Electrolyte Water is a zero-carb bottle option with electrolytes and a few B vitamins — useful when you want the salts without extra carbs from a drink.
The bottom line
HYROX rewards people who train hard and recover properly. You don't need a cupboard full of exotic powders. Top up electrolytes when you're sweating a lot, add carbs for the longer sessions, eat enough protein after, and keep the rest of your diet boringly solid. Do that consistently and race day feels a lot less mysterious.
As with any supplement, if you're pregnant, breastfeeding, have a medical condition or take medication, check with your GP or pharmacist before starting.
Always consult with a qualified healthcare professional before making any changes to your diet, exercise routine, or supplementation plan.
