Step-by-step workout prep for Hyrox athletes in the UK
Your hydration and nutrition needs are personal, and getting them wrong is one of the most common reasons sessions fall flat. Whether you're chasing a podium or a PB, this step-by-step guide walks through what to sort before every hard session and on race day.
Table of contents
- Step 1: Work out your hydration and nutrition needs
- Step 2: Pick the right pre-workout and electrolytes
- Step 3: Plan your clothing and kit
- Step 4: Do a structured warm-up
- Step 5: Check you're ready for hard training
Quick summary
| Key message | What it means |
|---|---|
| 1. Know your hydration needs | Work out your sweat rate so you know how much fluid you lose. |
| 2. Get your nutrition right | A sports nutritionist can tailor your carbs, protein and micronutrients. |
| 3. Plan your pre-workout | Choose natural supplements with key electrolytes for energy and hydration. |
| 4. Plan your kit | Breathable, sweat-wicking fabrics keep you comfortable. |
| 5. Check you're ready | Run through a quick physical and mental check before hard sessions. |
Step 1: Work out your hydration and nutrition needs
Knowing your own needs lets you build a plan that keeps you performing and avoids setbacks.
Start with your sweat rate. Research from Loughborough University shows hydration needs depend on intensity, conditions and genetics. Weigh yourself before and after a normal session. Each kg lost is roughly 1 litre of sweat. Add what you drank during the session and divide by the hours you trained to get your sweat rate per hour.
Then look at nutrition. Oxford Brookes University highlights the role of carbohydrates, protein and hydration in performance and recovery. A sports nutritionist can work out your carb, protein and micronutrient needs based on your training, body composition and goals.
Tip: log your sessions, energy and recovery as you try different hydration and nutrition plans. Keep what works.
Here's what affects your hydration and nutrition needs:
| Factor | Effect on hydration | Effect on nutrition |
|---|---|---|
| Exercise intensity | More fluid loss | More energy and nutrients needed |
| Conditions | Faster sweat rate | Changes electrolyte needs |
| Body composition | Changes metabolic rate | Changes protein and carb needs |
| Genetics | Changes sweat output | Affects how you use carbs, protein and fat |
Step 2: Pick the right pre-workout and electrolytes
Your pre-workout and electrolytes have a direct effect on your energy, hydration and output.
Imperial College London's evidence-based nutrition teaching covers how diet shapes performance. Choose products with natural ingredients that give steady energy. Look for sodium, potassium and magnesium, which support muscle function and help prevent cramps.
The University of Chester's exercise and nutrition science work recommends matching supplements to your training and your body. Think about your sweat rate, session length and how you use energy. Pick products that give quick and steady energy, and avoid ones high in sugar or synthetic additives that can lead to a crash.
Tip: try any new pre-workout or electrolyte in training first. Race day is the wrong time to find out how your stomach reacts.
Step 3: Plan your clothing and kit
The right kit helps you stay comfortable and manage your body temperature through a hard session.
Loughborough University research shows clothing affects sweat rate and temperature control. Choose breathable, sweat-wicking fabrics. Compression kit can support your muscles if it doesn't restrict movement, and lightweight materials help you shed heat in hard efforts.
Layer up so you can adapt. A base layer to handle sweat, a performance layer for support, a light waterproof for outdoor sessions, gloves for grip and spare socks to prevent blisters. Make sure your kit works for every station, from the sled push to the farmers carry.
Tip: pack a full change of clothes and test all your kit in training before race day.
Here's the essential kit and what it does:
| Item | Main job | Benefit |
|---|---|---|
| Sweat-wicking base layer | Manages sweat | Keeps skin dry and stops you getting cold |
| Compression shorts/tights | Supports muscles | Reduces fatigue and strain risk |
| Waterproof jacket | Protects from weather | Keeps you comfortable outdoors |
| Spare socks | Controls moisture | Lowers blister risk |
Step 4: Do a structured warm-up
A good warm-up switches your muscles on, raises your core temperature and gets your head in the right place.
The University of Chester's exercise science work supports warm-ups built around the demands of your sport. Start with 5 minutes of easy cardio like jogging, skipping or movements that copy Hyrox stations. Then do dynamic stretches for the muscles you use for running, lifting and carrying.
Build through 3 phases: mobility to open up your joints, activation drills to wake up key muscles, then Hyrox-specific movements. Leg swings, arm circles, bodyweight squats, lunges and controlled jumps all work. Give extra attention to shoulders, lower back and hip flexors.
Tip: use the same warm-up everywhere you train and race, so it becomes the signal that you're ready to go.
Step 5: Check you're ready for hard training
A quick check of how you feel, physically and mentally, helps you train well and lowers your injury risk.
Cambridge University Hospitals guidance recommends checking how you are before you exercise. Look at soreness, energy, sleep and how recovered you feel. Check your urine colour (pale yellow is good) and take your resting heart rate first thing. A raised resting heart rate can mean fatigue or illness on the way.
Oxford Brookes University stresses energy availability. Think about what you've eaten recently and whether you've had enough complex carbs, lean protein and key nutrients. Ongoing muscle fatigue, poor concentration or mood swings can point to a shortfall. A few quick movement checks, like bodyweight squats, single-leg balance and torso rotations, will flag any restrictions.
Tip: write a short readiness checklist and run through it before every hard session.
Support your Hyrox training with nutrition and hydration
Knowing your sweat rate, choosing the right pre-workout and checking you're ready before hard sessions all help you avoid energy crashes and fatigue.
See our full collection for pre-workout and electrolytes made in the UK with natural ingredients.
Shop at Interval, or save with our bundles.
Frequently asked questions
How can I assess my hydration needs as a Hyrox athlete?
Weigh yourself before and after a session. Add what you drank to the weight lost (1kg is about 1 litre) and divide by the hours trained to get your sweat rate per hour.
What should I include in my nutrition plan for Hyrox?
Enough carbohydrate, protein and key nutrients for your training load and goals. A sports nutritionist can build a personal plan.
What type of pre-workout supplements are best for Hyrox competitions?
Ones with natural ingredients and electrolytes like sodium, potassium and magnesium, giving quick and steady energy without lots of sugar.
How should I prepare my workout clothing for Hyrox training?
Wear breathable, sweat-wicking fabrics in layers: a base layer, a performance layer and a waterproof for bad weather.
What should I include in my warm-up routine before a Hyrox training session?
5 minutes of easy cardio, then dynamic stretches, then mobility, activation drills and Hyrox-specific movements.
How can I check I'm ready for high-intensity Hyrox training?
Check soreness, energy and hydration, and run through a short readiness checklist before each hard session.