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“Running on empty” is a common idiom that can be used to describe a number of scenarios where someone is worn out or unmotivated. For runners that are underfueling, it can be quite literal. Whether you are knowingly or unknowingly underfueling, there are important factors to know about your caloric and nutritional needs.
Despite the prevailing myth that weight loss boils down to a simple calories in, calories out formula, a variety of lifestyle factors and their ensuing hormonal responses affect the ways our bodies respond to exercise and food. In an effort to maximize weight loss, many people (particularly women) eat as little as possible. “High-performing female athletes are at a high risk of underfueling,” says Yasi Ansari, MS, RDN, CSSD, and national media spokesperson for the Academy of Nutrition and Dietetics. “This can take place without them even knowing.” There can also be such a focus on creating this calorie deficit that it can be easy to forget what calories actually do: fuel our bodies.
Your body responds to extreme caloric restriction by doing whatever it can to ensure your survival, mostly by conserving energy and putting calories toward its most basic functions. To do this, the body resorts to burning fewer calories. While in this survival mode your body produces more of the stress hormone cortisol, according to this 2010 study. And according to the Hormone Health Network, high levels of cortisol can cause changes to your sex drive and menstrual cycle and might even be linked to anxiety and depression.
If you’re not eating enough food, it’s also likely that you have some sort of micronutrient deficiency. According to the Micronutrient Information Center of Oregon State University, vitamin D, calcium, potassium, dietary fiber, and iron are commonly underconsumed in the U.S. Like eating too few calories, symptoms of micronutrient deficiency include fatigue, reduced immunity, lack of concentration, memory troubles, and mood fluctuations.
This impacts your training in several ways. When the body feels it must prioritize essential functions (like regulating breathing, body temperature, and blood pressure), it doesn’t feel that it’s safe to put resources toward things like rebuilding muscle tissue, which is the process that enables it to build strength. Training sessions
5 Signs You Aren’t Eating Enough
1. You’re Constantly Tired
Food is energy. As mentioned above, if you’re not eating enough calories, your body is going to use the ones it does have to support vital functions. This means there aren’t any left to do the things you love. If you’re dragging your feet at the gym every day or while out on a run, chances are you could benefit from more food.
2. You’ve Hit a Training Plateau
Have you been working out with greater intensity but aren’t seeing any results? Do you see, as Ansari describes, “decreased performance in the weight room, out on the track or trails,” or feeling like you’re bonking or hitting the wall? Your body could be in starvation mode, fighting to preserve as many calories as it can.
If you’ve hit a ceiling in your weight training and haven’t seen an increase in months, it’s likely that you need to eat more, both to fuel your training and to repair your muscles.
3. You Aren’t Regular
Only about five percent of Americans consume enough fiber each day, according to national consumption surveys. If you are under-eating, the chances of your body getting
4. Your Brain Feels Foggy
Ansari, who works mostly with runners in high school and college, mentions that poor concentration in school is a symptom of underfueling. You may also feel that at work or even have trouble staying mentally alert during a workout. Your brain relies on proper nutrition to function, as well as the rest of your body.
5. You Can’t Sleep, Even Though You’re Tired
Appropriate food intake allows for improved blood sugar control. The combination of consuming too few calories and over-exercising leaves your liver depleted of the glycogen stores it needs to keep your blood sugar stable, forcing your body to release stress hormones that eventually lead to the production of new glucose. When stress hormones are high, we have trouble falling–and staying–asleep.
“Someone who is limiting carbs and/or overall calories may experience some sleep challenges,” says Ansari. “Carbohydrates help to make tryptophan, an amino acid that increases sleepiness, more available to the brain.”
Adding Fuel to Your Tank
Unfortunately, it’s impossible to give a one-size-fits-all on how many calories your body needs, particularly since your energy expenditure varies every day. The USDA Dietary Guidelines estimate that adult women need anywhere from 1,600 to 2,400 calories a day. However, this baseline estimate doesn’t include the additional calories needed for intense exercise, as their definition of an active lifestyle for their purpose is “physical activity equivalent to walking more than 3 miles per day…in addition to the activities of independent living.”
While there are many bodyweight calculators available that can tell you what your ideal weight (and thus ideal calorie intake) should be for your age, gender, and height, both fail to consider things like frame size and muscle mass. Ansari recommends connecting with a registered dietitian to really figure out how to meet your needs.
There are other simple steps you can take to start benefiting your nutrition, like adding more whole foods, especially fruits and vegetables, to your diet. This is especially important if you suspect you have a nutrient deficiency. An RD can help you determine if you need additional interventions like supplements or vitamins.
You can use
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The future of American distance running may have just announced itself.
Luke Surface, an 8th-grade student-athlete from North Raleigh Christian Academy in Raleigh, North Carolina, delivered a performance that stunned the track and field community after taking on some of the nation’s best high school runners at Nike Outdoor Nationals.
Competing at the legendary Hayward Field in Eugene, Oregon — one of the most iconic venues in American distance running — Surface lined up in the boys championship 5,000 meters against a field dominated by high school seniors, including several athletes preparing to compete at the NCAA Division I level.
Despite being one of the youngest runners in the race, the 14-year-old held his own against the elite competition, finishing eighth in an incredible 14:25.88. The performance set a new national middle school record, averaging approximately 4:39 per mile for more than three miles.
That kind of time is fast enough to win many high school state championships across the United States and meets qualifying standards for several major NCAA Division I conference competitions — a remarkable achievement for a runner who has not yet entered high school.
But Surface’s historic 5,000m performance was only the latest chapter in a season filled with record-breaking moments.
Earlier in May, he clocked 8:52.03 for 3,200 meters at the NCISAA Division I State Championships in North Carolina, breaking another national middle school record. His converted two-mile time of 8:55.12 surpassed the previous world-best mark for a 14-year-old age group, previously held by Vincent Recupero.
During the previous cross-country season, Surface also made headlines when he ran 15:12 at the adidas XC Challenge, finishing second while competing against runners who were several years older.
Across cross country, two miles, and the 5,000 meters, Surface has continued to prove that his talent is far beyond his age group. While he still has four years of high school competition ahead before reaching the college level, his performances have already placed him among the most exciting young distance runners to watch.
The American high school 5,000-meter record currently stands at 13:32, set by Lex Young in 2023 — a mark Surface is not yet close to challenging. However, his remarkable progression at such a young age has caught the attention of the running world, with many eager to follow how far his extraordinary journey can go.
For now, Luke Surface remains an eighth grader rewriting the record books — and his story is only beginning.
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DOHA, Qatar – Ethiopian distance running is once again making a powerful statement on the global stage. Following the Doha Diamond League meeting, Ethiopia has achieved a remarkable clean sweep of the women's 3000m/5000m standings, occupying all eight leading positions in one of the most competitive disciplines in world athletics.
Leading the charge is Likina Amebaw, who sits comfortably at the top of the rankings with 22 points. Close behind is fellow Ethiopian star Freweyni Hailu on 14 points, while Medina Eisa occupies third place with 12 points. The dominance continues through the rest of the leaderboard, with Senayet Getachew, Hawi Abera, Aleshign Baweke, Marta Alemayo, and Bernesh Dessie completing an extraordinary Ethiopian monopoly of the standings.
The achievement highlights Ethiopia's exceptional depth in women's distance running, where a new generation of athletes continues to emerge and challenge for global honours. Rather than relying on a single standout performer, Ethiopia has assembled a formidable squad capable of controlling races and collecting points across multiple Diamond League meetings.
While the current standings paint a picture of complete Ethiopian supremacy, the battle for the Diamond League title is far from over. Several meetings remain on the road to the season finale, leaving plenty of opportunities for rivals to close the gap and for positions within the Ethiopian contingent to shift dramatically.
For now, however, the spotlight belongs firmly to Ethiopia. The East African powerhouse has transformed the women's 3000m/5000m standings into an all-Ethiopian affair, sending a clear message to the rest of the world that the race for Diamond League glory will likely run through Addis Ababa.
The question now is whether Likina Amebaw can maintain her advantage and finish the season as the overall leader, whether Freweyni Hailu or Medina Eisa can mount a successful challenge, or whether another athlete will produce a late-season surge to rewrite the script.
One thing is certain: the road to the Diamond League Final promises a fascinating battle among some of the finest distance runners on the planet.
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Kenyan athletics superstar and world champion Beatrice Chebet has officially entered a beautiful new chapter in her life after welcoming a baby boy.
The 26-year-old track sensation, born on 5 March 2000, has built a remarkable legacy as one of the greatest distance runners of her generation. Chebet is a world record holder in the 5000m, 10,000m and road 5km, with a career decorated by historic victories on the biggest stages.
She made history at the 2024 Summer Olympics by winning gold medals in both the 5000m and 10,000m, before achieving the same remarkable double at the 2025 World Athletics Championships. Her medal collection also includes a 5000m silver medal at the 2022 World Athletics Championships and bronze at the 2023 World Athletics Championships.
Beyond the track, Chebet has also dominated cross country, becoming a three-time world champion after winning the junior title in 2019 and senior titles in 2023 and 2024. She has also claimed major 5000m victories at the 2018 World U20 Championships, 2022 Commonwealth Games and the 2022 African Championships in Athletics.
Now, the Kenyan star is celebrating a different kind of milestone — becoming a mother.
Sharing the joyful news, Chebet introduced her newborn son with a heartfelt message filled with love and excitement:
“Tiny hands, tiny feet, and a love so big! A beautiful new chapter begins. Welcome to our world our sweet little baby boy!”
The arrival of her son marks a special moment away from competition, as the world champion embraces motherhood while carrying the pride of a nation that has watched her achieve greatness.
Messages of congratulations have poured in from fans and the athletics community, celebrating the new chapter for one of Kenya’s most successful athletes.
As Beatrice Chebet adds motherhood to her list of remarkable achievements, the champion now begins a new journey filled with love, joy, and unforgettable moments with her baby boy.
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Jake Wightman delivered a masterclass in championship racing as he surged to the men's 800m title at the UK Athletics Championships, holding off a determined challenge from Ben Pattison in a thrilling finish.
In a race defined by patience, positioning, and precise execution, Wightman waited for the perfect moment to strike before unleashing his finishing kick down the home straight. The former world champion crossed the line in 1:45.40, just doing enough to edge Pattison and secure the national crown.
The contest lived up to expectations, bringing together two of Britain's finest middle-distance talents in a tactical battle where every move carried significance. With the pace controlled through the early stages, the field remained tightly packed, setting the stage for a dramatic final lap.
As the bell rang, the intensity immediately rose. Pattison looked poised to seize control and pushed hard in the closing metres, but Wightman's experience and race awareness proved decisive. Drawing on years of competing at the highest level, he maintained his composure under pressure and found the extra gear required to stay ahead when it mattered most.
The victory marks another significant chapter in Wightman's decorated career and serves as a timely statement of intent as the international season gathers momentum. More importantly, it showcased the qualities that have made him one of Britain's most respected middle-distance athletes — tactical intelligence, resilience, and an ability to deliver in the biggest moments.
For Pattison, the narrow defeat will provide encouragement rather than disappointment. His performance confirmed his growing status among Britain's elite 800m runners and highlighted the depth of talent currently thriving in the event.
But on this occasion, the spotlight belonged to Wightman. In a race where the margins were razor-thin, he executed his plan to perfection and walked away with the UK Athletics Championship title.
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Remember the name Gout Gout.
At just 18 years old, the Australian sprint prodigy is already commanding global attention and fueling conversations about the future of track and field. In a sport constantly searching for its next superstar, Gout is rapidly emerging as one of the brightest talents the world has seen in years.
His latest statement came at the prestigious Ostrava Golden Spike meeting, where he stepped onto the track alongside some of sprinting's biggest names, including reigning world champion Noah Lyles. Far from being overwhelmed by the occasion, the teenager delivered a composed and confident performance, finishing third in the 150m in 14.96 seconds against two of the fastest athletes on the planet.
Yet impressive as that performance was, it is not the result that has the athletics community buzzing most.
Earlier this year, Gout stunned the sprinting world by clocking an astonishing 19.67 seconds for 200m, setting a new world Under-20 record. The performance instantly elevated him from promising prospect to genuine phenomenon.
What makes the achievement even more remarkable is the historical context. At the same age, Gout was faster than sprint legend Usain Bolt. Comparisons to the Jamaican icon are inevitable, not because records demand them, but because the raw numbers are impossible to ignore.
Of course, Gout's journey is only beginning. Like any young athlete, he still has room to grow, refine his craft, and gain valuable experience at the highest level. The road from teenage sensation to global champion is rarely straightforward.
But there is no denying the extraordinary potential that lies within him.
His speed, composure, and ability to perform under pressure have already marked him out as one of athletics' most exciting young stars. More importantly, he possesses the kind of talent that inspires belief that a new era of sprinting may be on the horizon.
The sport has always thrived on rivalries that capture the imagination of fans across the globe. With established champions such as Noah Lyles currently leading the way, the emergence of Gout Gout adds an intriguing new chapter to sprinting's future.
The next great rivalry may already be taking shape.
And one of its leading figures is still only a teenager.
For now, the message is simple: remember the name Gout Gout. The future is arriving faster than anyone expected.
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