Is Your Gymnast Underfueled? Signs of Acute vs. Chronic Underfueling

Is your gymnast underfueled? If you’re a parent who’s worried she isn’t eating enough, you are not alone. Underfueling is one of the most common things we see in competitive gymnasts, and it doesn’t always look the way parents expect.

Let’s talk about what “underfueled” actually means, the difference between acute and chronic underfueling, the signs to watch for at practice and on meet day, and what to do about it.

By Christina Anderson MS, RDN, CSP, CSSD · Updated October 2026

What does it mean to be underfueled?

An underfueled gymnast isn’t eating enough to cover everything her body is doing: training, growing, developing, recovering and just living. In research terms, that’s called low energy availability.

This is where the recovery gap comes in. The recovery gap is the difference between what her body NEEDS and what she’s actually getting. A gymnast can close it most days and have the occasional rough one (acute underfueling), or she can live in that gap for months (chronic underfueling). Those two look very different, and they need different fixes.

When underfueling goes on long enough, it can turn into REDs (Relative Energy Deficiency in Sport), which affects periods, bones, growth, mood, immune health and performance. (For the latest on the 2023 IOC update, listen to Episode 219: REDs in Gymnasts.) One rough practice is NOT REDs. But a pattern of them is worth paying attention to.

Acute underfueling: one day or one meet

Acute underfueling happens when a gymnast doesn’t eat enough, or eats the wrong things at the wrong time, over a short window. It shows up most on competition day.

It often happens when:

• She skips meals because of nerves
• The meet schedule throws off her normal eating routine
• Meals are poorly timed around warmups and competing
• Pre-competition fueling is too small or missing

Even a single day of poor fueling can hurt focus, energy and performance. I have so many parents in my DMs asking, “What do I feed her on competition day?!” And yes, fueling on meet day matters. But acute underfueling often sits on top of a deeper problem: chronic underfueling. That’s the bigger issue at play.

Why gymnasts miss hunger cues on meet day

“I can’t eat anything!” “I’m not hungry!” Sound familiar?

Many athletes assume hunger is the main signal to eat. But nerves, performance stress and adrenaline often shut down appetite, especially on competition day. Even experienced, uber-consistent gymnasts may not feel hungry under pressure, so they unintentionally underfuel.

Underfueling doesn’t always feel like hunger, either. On meet day, it can look like:

• Mood changes or irritability
• Headaches
• Stomach discomfort
• Brain fog
• Low energy and shaky performance

Chronic underfueling: the bigger problem

Chronic underfueling happens when a gymnast consistently doesn’t eat enough to support:

• Her training load
• Growth and development
• Muscle recovery
• Adapting to training so she actually gets stronger

High-level gymnasts train 20-30 hours a week, yet their food intake rarely matches what they burn. Most need somewhere around 2,000, 2,500 or 3,000+ calories a day depending on age, level, growth and training, often MORE than most adults.

Parents frequently ask me for meal ideas or snack suggestions, but the root problem is usually not enough total food, not a lack of variety. Sorry not sorry, your gymnast doesn’t need more snack ideas. She needs adequate fueling for the level of her sport. (To learn how this progresses, listen to The 5 Stages of Underfueling.)

Signs of chronic underfueling

Chronic underfueling builds slowly, so the signs are easy to brush off as “just gymnastics.” Watch for:

• Always tired, or crashing by the third rotation
• Frequent injuries, stress fractures or injuries that won’t heal
• No period by 15, or periods that stop or become irregular
• Growth that slows or stalls on her growth chart
• Getting sick often
• Low iron or other abnormal labs
• Mood swings, anxiety or loss of motivation
• Skills plateauing, or strength going backward despite hard training

These line up with what the 2023 International Olympic Committee consensus on REDs lists as health and performance effects of low energy availability. And just because she “feels fine” does NOT mean everything is fine underneath the surface. Underfueling can take MONTHS to correct.

Signs of an underfueled gymnast at practice

“But how do I KNOW if she’s underfueled?!”

Is she fine at the start of practice and done by the third rotation? Read Why Is My Gymnast So Tired at Practice? for the 4 most common reasons and a quick audit.

One major red flag is being starving during practice. Exercise usually blunts appetite, so if she’s ravenous mid-workout, she likely walked in already underfueled.

Other warning signs at practice:

• Persistent fatigue
• Trouble finishing routines or assignments
• Watching the clock
• Low focus or motivation

Check in with her after practice. Was she hungry? Tired? Energized? Keeping track of her energy and hunger after practice helps you see whether she needs more before and during practice. (See What to Eat Before Gymnastics Practice.) If you’re unsure whether she’s meeting her needs, start with a gymnast fueling audit.

How underfueling leads to burnout, injury and missed goals

Too often, families plan to “just get through season” and deal with nutrition later. But let’s be honest: there is no off season in gymnastics. Most high-level gymnasts go straight from the stress of season into summer conditioning and upgrades, and then wonder why they stay stuck.

Chronic underfueling contributes to:

• Physical and mental burnout
• Higher injury risk, including bone injuries
• Slower recovery
• Less strength and endurance
• Missed competitive opportunities

Even highly motivated gymnasts who love their sport can feel miserable in the gym when their energy needs aren’t met. Now imagine your gymnast making it all the way through post season and CRUSHING it, or not dreading summer conditioning because her body is actually recovering.

How to fix underfueling

The fix depends on which kind you’re dealing with.

For acute underfueling (meet day): plan ahead and don’t rely on hunger.

• Eat a real breakfast and plan meals around the meet schedule (see Top 5 Pre-Competition Breakfasts)
• Include carbs, protein and fat in her meals
• Pack pre-competition and between-event snacks
• Fuel afterward, even if she’s “not hungry” (more in What Foods Should Gymnasts Eat on Competition Day?)

For chronic underfueling: close the recovery gap every single day, not just on meet day.

• 3 meals and 2-3 snacks every day, including rest days
• Fuel before practice and, for long practices, during practice
• A real recovery meal or snack after practice
• Watch her growth chart and her period with her pediatrician
• Get help from a sports dietitian if signs keep showing up

It’s not about being perfect. It’s about closing the recovery gap each and every day.

How do you know if your gymnast is eating enough?

Ask yourself:

• Is she eating enough every day to support her training?
• Are her meals consistent and balanced?
• Is her fueling intentional on competition day?
• Is her energy steady through practice?
• Is she growing consistently, and is her period on track?

Even gymnasts who look successful can be underfueled. And her needs will change as she moves up levels and goes through puberty. It’s never a one-and-done plan.

Free masterclass: how to tell if your gymnast is underfueled

If you’re not sure whether your gymnast is getting enough, a structured look can catch warning signs early. Our free Underfueled Gymnast Check helps you look at:

• How to assess her energy intake
• Signs of low energy availability
• Growth and development red flags
• Practical fueling strategies for her level

Frequently asked questions

Get help for your underfueled gymnast

Underfueling is so common in gymnastics, and it’s fixable. The earlier you catch it, the easier it is to turn around.

Not sure where she stands? Take our free Underfueled Gymnast Check. And if you want more than a generic meal plan, The Balanced Gymnast® Program is our 1:1 program, built by a former gymnast, nationally rated NCAA/USAG judge and pediatric sports dietitian who lives and breathes this sport. We build her plan around HER: her training, her meet schedule, her growth and the foods she actually likes, so she can close the recovery gap each and every day.