If you’re a caregiver cheering from the sidelines and fueling a young athlete’s busy training schedule, you play an important role in helping them eat well to support their performance.
The focus for children ages 5 to 12 who are involved in sports is ensuring they are eating enough nutritious foods to support healthy growth, good energy, and a strong immune system (1). They might not be an Olympian yet, but their bodies are quickly growing and working hard during both play and practice.
In this post, we’ll break down age-appropriate nutrition strategies, spotlight why carbohydrates are important, and give you simple, doable tips to keep your little athlete energized and thriving.
Why Carbohydrates Matter for Kids in Sports
Carbohydrates are the top fuel source for kids’ bodies and brain and they power everything from cartwheels to classroom focus. Carbohydrates should make up 45–65% of their daily energy intake (2).
Best Carb Sources for Active Kids
Great carbohydrate options for kids include oats, rice, whole grain pasta, potatoes, fruits, vegetables, yogurt, and beans. These help keep their energy up and tummies full.
Why Potatoes are a Smart Carb Choice
Potatoes are a smart, budget-friendly source of fast energy. They offer:
- Quick carbs for after-practice refueling
- Potassium, vitamin C, and B vitamins to support recovery
- A kid-friendly texture that pairs well with many meals
Serve them baked, mashed, roasted, or cubed and cooled for lunchboxes.
Protein for Growth and Recovery
Kids need protein to build muscles, support recovery, and help their growing bodies thrive. While they don’t need protein shakes or supplements, they do need consistent sources throughout the day.
Try lean meats, cheese, milk, eggs, tofu, beans, and nut butters. Spread it out over meals and snacks—think: chicken quesadillas, yogurt with granola, or a boiled egg with fruit.
Hydration and Electrolytes: What Parents Should Know
Young kids sweat too! They lose sodium and potassium while playing, especially on warm days. For activities under 60 minutes, water is just fine (4). For longer or hotter sessions, offer extra fruits, potatoes, and bananas for natural electrolytes.
Make sure that kids are also drinking well throughout the day when they are active and not just during their activities – Offer water, milk, or milk alternatives to keep them hydrated.
Avoid sugary sports drinks unless recommended by a healthcare provider for a specific reason—a watermelon slice or orange wedge often does the trick (4).
Essential Micronutrients for Kids in Sports
- Iron: Supports energy and focus. Some good sources include fortified cereals, red meat, beans, and spinach. Girls close to puberty may need more (3).
- Calcium: Crucial for strong bones. Found in milk and fortified milk alternatives, yogurt, cheese, and leafy greens.
- Vitamin D works with calcium to support bone health. Speak to your child’s doctor to see if a supplement is needed.
- Magnesium: Helps with muscle function. Found in whole grains, nuts, seeds, beans, and dark chocolate.
Daily Energy Needs and Signs of Underfueling:
Kids ages 5 to 12 have varying energy needs depending on growth stage, sport, and how active they are. Make sure meals are consistent, and aim to offer snacks every 2 to 3 hours.
Signs they might need more fuel? Fatigue, irritability, trouble focusing, or always being hungry after sports.
Dietary Guidelines for Kids in Sports:
- Use the Dietary Guidelines for Americans to plan balanced meals with veggies/fruits, protein, and whole grains.
- Add extra servings of carbs and protein when training or playing sports.
- Include a rainbow of foods throughout the day for key vitamins and minerals.
When to Consult a Dietician
For kids in competitive sports or with specific dietary needs, talk to a registered dietitian. They can help personalize a plan to support both growth and sport performance.
Easy Nutrition Tips & Kid-Friendly Recipes for Busy Parents:
Pre-Activity Snacks (1 to 2 hours ahead):
- Banana + nut butter
- Mini turkey sandwich
- Baked potato cubes + cottage cheese dip. Here are some other recipes we love:
Roasted Little Potatoes with Dill Dip
Smashed Potatoes with Edamame and White Bean Dip
Smashed Potatoes with Chickpea Delight Dip
Garlic Parmesan Personal Pizzas or this Potato Pizza
During Activity Fuel:
- Water first
- Cut-up oranges, apple slices, pretzels, or grapes
Post Activity Meals (within 60 minutes):
- 1% milk + granola bar
- Scrambled eggs + toast
- Mashed potatoes + meatballs, here are some other recipes we love:
Honey Garlic Chicken Foil Packs
Grilled Potato and Halloumi Bowl
Maple Glazed Sausage Sheet Pan Dinner
Feeding a young athlete requires a bit of extra planning, but it doesn’t have to be complicated. Kids ages 5 to 12 are growing fast, burning energy through school, play, and sports, and they rely on us—the sideline snack-packers—to make sure they’re getting what they need.
A mix of wholesome carbohydrates, protein, hydration, and key nutrients can help your child feel energized, focused, and ready to give it their all, whether they’re scoring goals, doing cartwheels, or just being active kids.
By creating regular mealtime routines, packing simple pre- and post-activity snacks, and remembering that foods can be both nourishing and familiar, you’re setting the foundation for a healthy relationship with food that supports their performance now and their growth in the years to come.
References:
(1) Centenera-Centenera, A., Hernández-Martínez, A., Meseguer-Liza, C., & Rizo-Baeza, M. M. (2024). Nutrition for children and adolescents who practice sport. Children, 11(5), 684.https://doi.org/10.3390/children11050684
(2) U.S. Department of Agriculture & U.S. Department of Health and Human Services. (2020). Dietary Guidelines for Americans, 2020–2025 (9th ed.). https://www.dietaryguidelines.gov
(3) Mayo Clinic Staff. (n.d.). Iron deficiency in children: Prevention tips for parents. Mayo Clinic. Retrieved June 26, 2025, from https://www.mayoclinic.org/healthy-lifestyle/childrens-health/in-depth/iron-deficiency/art-20045634
(4) American Academy of Pediatrics. (2020). Hydration for young athletes. HealthyChildren.org.https://www.healthychildren.org/English/healthy-living/sports/Pages/Hydration-Tips-for-Young-Athletes.aspx
