Natural pre-workout routine for Hyrox
What you do in the hours before a Hyrox session shapes how it goes. Get your fluids, food, supplements and warm-up sorted and you'll turn up with more energy and a clearer head. Small habits, repeated in training, are what carry you through on race day.
Quick summary
| Key point | Explanation |
|---|---|
| 1. Stay on top of hydration | Aim for 35-45 ml of fluid per kg bodyweight a day, building up in the week before an event. |
| 2. Carb load in stages | Build carbohydrate intake from 3 up to 10 grams per kg in the days before race day. |
| 3. Use natural pre-workout ingredients | Beetroot juice and caffeine can help endurance, speed and focus. |
| 4. Get supplement timing right | Take caffeine 30-60 minutes before you train so it peaks when you need it. |
| 5. Review and adjust | Check your hydration, food and performance regularly and tweak what isn't working. |
Table of contents
- Step 1: Set up a hydration and nutrition base
- Step 2: Pick your natural pre-workout ingredients
- Step 3: Add a dynamic warm-up
- Step 4: Time your supplements
- Step 5: Check your readiness and adjust
Step 1: Set up a hydration and nutrition base
Everything else sits on top of this, so start here.
During training, aim for 35-40 ml of fluid per kilogram of bodyweight a day. In the final week before your event, nudge that up to 40-45 ml per kilogram. In the hours before you train, drink 5-7 ml per kg, and add electrolytes if you're a heavy sweater or it's warm.
For food, eat 1-4 grams of carbohydrate per kilogram of bodyweight 1-4 hours before your session. Add 15-25 grams of protein and 5-10 grams of fat. That gives you steady energy without a heavy stomach on the sled push.
For carb loading before race day:
- 3-5 grams per kg bodyweight 7-4 days before
- 5-7 grams per kg 3-2 days before
- 7-10 grams per kg the day before
On race day, eat a main meal 3-4 hours out and a smaller top-up 1-2 hours before you start. That keeps your energy up and your gut settled.
Warning: never try anything new on race day. Test your hydration and food plan in training first.
Once this base is in place, adjust the numbers to suit your body and how hard you're training.
Here's a summary of the hydration and nutrition guidelines:
| Timing | Hydration (ml/kg) | Carbohydrates (g/kg) | Protein (g) | Healthy fats (g) |
|---|---|---|---|---|
| Daily during training | 35-40 | - | - | - |
| Final prep week | 40-45 | - | - | - |
| 1-4 hrs pre-exercise | 5-7 + electrolytes if needed | 1-4 | 15-25 | 5-10 |
| Carb load 7-4 days out | - | 3-5 | - | - |
| Carb load 3-2 days out | - | 5-7 | - | - |
| Carb load 1 day prior | - | 7-10 | - | - |
Step 2: Pick your natural pre-workout ingredients
A few natural ingredients have decent evidence behind them for the kind of work Hyrox asks of you.
Start with beetroot juice. Hyrox nutrition guidance suggests 300-500 ml of beetroot juice 2-3 hours before your event. The nitrates in beetroot raise nitric oxide, which helps blood flow and gets oxygen to working muscles.
Caffeine is the other big one. The usual research dose is 3-6 mg per kilogram of bodyweight, about 60 minutes before you train. It can help speed, strength and focus.
Branched-chain amino acids (BCAAs) are an option too. Some athletes take 5-10 grams during and after a session to help with soreness and recovery.
Read more about natural ingredients like cordyceps. Mushroom extracts are adaptogens, which people use to support steady energy and recovery.
Warning: bring in new supplements one at a time and see how you respond. What works for your training partner might not work for you.
Next, get the timing and doses right.
Step 3: Add a dynamic warm-up
A good warm-up wakes up the muscles you're about to hammer, frees up your joints and lowers your injury risk.
Start with mobility work that slowly raises your heart rate and muscle temperature. Leg swings open up the hip flexors. Do forward and side swings, 10-15 on each leg. They get your lower body ready for lunges and the sled.
Then move into dynamic stretches that look like the work ahead. Walking lunges with a twist get your core, quads and spine moving. Arm circles and shoulder rolls get your upper body ready for the wall balls and the row.
Finish with bodyweight moves that work lots of muscles at once. Mountain climbers hit your core, shoulders and legs and lift your heart rate. Inchworms or spider walks help coordination.
Warning: move slowly and with control. Good movement matters more than speed or reps. Stop if you feel sharp pain.
Work through this routine and you'll be ready to go straight into your main session.
Step 4: Time your supplements
When you take something matters as much as what you take.
A common caffeine dose is 2-6 mg per kilogram of bodyweight, taken 30-60 minutes before training. It's mostly absorbed by around 45 minutes and peaks at about 60.
Your own response will vary, so test it in training. Try different timings in sessions that don't matter and you'll find your window before race day. Read our Pre-Shot science page for more on timing.
Some athletes like to split their supplements across the hour before a session. Others take everything at once. Try both and see what suits you.
Warning: people respond very differently to supplements. Start with a low dose and build up based on how you feel.
Timing things carefully turns a generic plan into one built around you. Keep track of what you try so you can refine it.
Step 5: Check your readiness and adjust
Your routine should keep changing as you learn what works.
Hyrox Training Plans recommends practising your nutrition and hydration in training. Test every part of your race-day prep so you find any gut issues long before the start line.
Nutrition and Co also points out that your routine should fit you and the weather. Keep a training log. Note your energy, recovery and how each session felt, plus what you drank, when you took supplements and what you ate.
Watch how you respond in different conditions. In the darker months you might need extra vitamin D. When it's warm you'll sweat more, so raise your fluids and electrolytes. Adjust meal timing and portion sizes to what your stomach can handle.
Warning: change one thing at a time. If you change three things at once you won't know which one helped.
Keep logging and adjusting and your routine will get better week by week.
Natural pre-workout support for Hyrox
If you've sorted your food and fluids and want a natural pre-workout to go with them, we make one for Hyrox and high-intensity training.
Interval Pre-Shot is a 60ml shot with 200mg caffeine, 400mg beetroot extract and mushroom extracts, and a 6-pack is £10.99. You can find it and the rest of the range on our main site.
Frequently asked questions
How can I structure my hydration routine for intense Hyrox performance?
Aim for 35-40 ml of fluid per kilogram of bodyweight a day in training, rising to 40-45 ml as race day gets closer. Track what you drink so you hit those numbers week after week.
What should I eat before my workout to support my Hyrox performance?
Eat 1-4 grams of carbohydrate per kilogram of bodyweight, plus 15-25 grams of protein and 5-10 grams of fat, 1-4 hours before you train. That gives you steady energy without upsetting your stomach. Test your meal in training first.
Which natural pre-workout ingredients should I include in my routine?
Beetroot juice (300-500 ml) and caffeine (3-6 mg per kilogram) are the two with the most evidence. Some athletes add BCAAs (5-10 grams during and after training) to help with soreness. Try them in training and find the balance that suits you.
How do I effectively warm up before a Hyrox event?
Do leg swings, walking lunges with a twist and mountain climbers, 10-15 reps of each. Give it at least 10 minutes so your body is ready for the first run.
What is the best timing for my supplement intake before a workout?
Take caffeine 30-60 minutes before you train. Adjust based on how you respond and note it in your training log. Start with a low dose and build up.
How can I evaluate and adjust my pre-workout routine for better results?
Review your hydration, food and supplements after each session. Keep a log of energy, recovery and session quality. Change one thing at a time so you can see what made the difference.