How Nutrition Affects Mental Focus and Game-Day Nerves
- Jenaed Brodell
- Aug 8
- 3 min read
Food Fuels More Than Muscles
We often think about food as fuel for our bodies. But here’s the truth: your brain needs fuel too. What you eat can help you focus better, stay calm under pressure, and even reduce pre-game anxiety.
That’s why athletes need more than just training. To truly perform at your best, you need a game-day nutrition plan that supports both your body and mind.
Let’s break it down in simple terms.
The link between Nutrition and Mental Focus
Carbs = Brain Energy
Your brain runs mostly on glucose, which comes from carbohydrates. But not all carbs are created equal.
Choose complex carbs such as:
Oatmeal
Whole grain bread
Brown rice
Quinoa
Sweet potatoes
These release energy slowly, helping you stay sharp without crashing.
Avoid simple carbs such as:
Sugary cereals
Candy
Soda
White bread
They spike your blood sugar, then cause a crash, making you tired and unfocused.
Protein Keeps You Alert
Protein gives your brain the building blocks to make chemicals like dopamine (helps with motivation) and serotonin (boosts mood).
Good protein choices:
Eggs
Chicken
Greek yogurt
Tofu
Protein smoothies
Eating protein with meals helps you stay focused and avoid energy dips.
Healthy Fats Help You Think
Your brain is made up mostly of fat. That’s why healthy fats are important for clear thinking and memory.
Best sources:
Avocados
Salmon or tuna
Walnuts and chia seeds
Olive oil
These fats also reduce inflammation, which helps with stress and recovery.
How Food Helps Manage Game-Day Nerves
Everyone gets nervous before a big game or performance. But nutrition can actually help calm your nerves and improve mental focus.
Magnesium = Natural Relaxation
,Magnesium helps your body handle stress; however many people don’t get enough.
Eat more:
Spinach
Almonds
Pumpkin seeds
Dark chocolate
Don’t Forget to Hydrate
Even small amounts of dehydration can mess with your focus and mood.
Hydration tips:
Drink water throughout the day, not just right before the game.
Add electrolytes if you sweat a lot.
Skip sugary or overly caffeinated drinks.
Be Careful With Caffeine
Caffeine can help with alertness, but too much can cause jitters and anxiety, especially if you’re already nervous.
Smart caffeine use:
1 cup of coffee or tea is enough.
Don’t drink it on an empty stomach.
Avoid caffeine late in the day as it can affect sleep.
What About Athletes With IBS?
If you have Irritable Bowel Syndrome (IBS), you already know nutrition and mental focus, such as stress, can trigger symptoms. That’s tough when you’re trying to focus and compete.
Here’s how to stay in control:
IBS Nutrition Tips:
Try a low-FODMAP diet (low in fermentable carbs).
Avoid triggers like garlic, onions, beans, and dairy.
Eat smaller meals more often.
Don’t try new foods on game day.
Work with a sports dietitian to build a personalised plan.

What to Eat on Game Day?
2-3 Hours Before:
Grilled chicken with brown rice
Quinoa bowl with avocado and eggs
Peanut butter on whole grain toast and a banana
30-60 Minutes Before:
Protein smoothie with berries and spinach
Rice cake with nut butter
Small banana or applesauce pouch
Avoid These:
Fried or greasy foods
Large meals
High-fibre or gassy foods (especially if you have IBS)
Too much sugar or caffeine
FAQ: Nutrition, Focus & Game-Day Nerves
1. What should I eat to stay focused before a game?
A mix of complex carbs, protein, and healthy fats works best. Try something like oatmeal with nut butter and banana or grilled chicken with quinoa and veggies.
2. Does dehydration affect my mental performance?
Yes! Even mild dehydration can make you tired, unfocused, or moody. Drink water throughout the day, especially if you’re sweating during training or competing in hot weather.
3. What can I eat to calm my nerves?
Foods high in magnesium (like spinach and almonds) and omega-3s (like salmon and walnuts) can help calm the nervous system. Avoid too much sugar or caffeine before a game.
Optimise your nutrition by working with our team of sports nutrition experts at Nutrition and Co. Book an initial appointment on WhatsApp through +447888465215.




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