This means training your mind to make healthy choices, training your body to recover well, and training your will to choose foods that help you perform instead of foods that hold you back.
With that being said, let's get into the weeds with this and talk about....
Why Junk Food Hurts Running Performance
1. It Doesn't Provide Lasting Energy
Highly processed foods loaded with refined sugars create quick spikes in blood sugar followed by energy crashes. Instead of steady endurance, you'll often feel sluggish before your run is even over.
Your body performs best when fueled by complex carbohydrates, fruits, vegetables, whole grains, and lean proteins that provide consistent energy.
2. Recovery Takes Longer
Hard workouts create tiny amounts of muscle damage that must be repaired. Junk food provides calories but very few of the nutrients your muscles actually need.
Protein, healthy fats, vitamins, minerals, and antioxidants help rebuild stronger muscles and prepare you for your next workout.
3. It Increases Inflammation
Many processed foods are high in refined oils, added sugars, and sodium that can contribute to inflammation throughout the body.
Inflammation can leave runners feeling sore longer, increase fatigue, and make it harder to bounce back between training sessions.
4. It Can Lead to Unwanted Weight Gain
Running becomes easier when you're carrying less unnecessary weight.
Consistently eating calorie-dense, nutrient-poor foods can make training feel harder than it needs to be and place additional stress on your joints with every step.
5. It Weakens Your Immune System
Marathon training already places stress on your body. A diet filled with junk food may leave your immune system less prepared to fight off illness.
Missing a week of training because you're sick is much more difficult than simply saying "no" to a drive-thru meal.
6. Poor Nutrition Means Poor Recovery
Recovery doesn't begin after the race—it begins after every workout.
Your muscles need carbohydrates to replace glycogen, protein to repair tissue, and fluids and electrolytes to restore what was lost through sweat. Junk food simply doesn't provide those nutrients in the amounts your body needs.
7. Mental Performance Matters Too
Nutrition doesn't just affect your legs—it affects your brain.
Highly processed foods can leave you feeling tired, unfocused, and unmotivated. Good nutrition helps improve concentration, mood, decision-making, and the mental toughness required to push through difficult workouts.
Every Food Choice Is Part of Your Training
Many runners think training only happens when the watch starts.
In reality, every meal, every snack, every drink, every night of sleep, and every recovery decision becomes part of your training plan.
When you choose water instead of soda…
When you grab fruit instead of fig newtons…
When you prepare dinner instead of relying on fast food…
You're building the same discipline that helps you finish long runs and cross finish lines.
Train Your Will
Running teaches us that discipline often beats motivation.
The same principle applies in the kitchen.
There will always be temptations. Convenience foods are everywhere (and I mean everywhere). But every healthy choice strengthens something far more valuable than your muscles—it strengthens your will.
The will to choose what helps instead of what hurts. Fast food might taste good in the moment but too much of it will hurt your performance. Choose whole foods! Keep in mind that this means you must think ahead. Plan for the day and pack your food so you won't be tempted to give in.
The will to think long-term instead of momentary satisfaction. This discipline will pay dividends since the race is completed one mile at a time. A long-term attitude will lead to long-term success.
The will to become the healthiest version of yourself. For real! Gaining the discipline to eat right will spill over into other areas of your life as cutting out "junk food" not only makes you feel better but it makes you think better!
Week 3 Challenge
As you head into Week 3 of the official Bass Pro Marathon, Half Marathon, and Dogwood Canyon Trail Run training, don't just commit to completing every workout.
Commit to fueling every workout as best as you can.
This week, challenge yourself to:
Drink more water.
Eat more fruits and vegetables.
Include lean protein with your meals.
Shop on the outside perimeter of the grocery store where the whole foods are found.
Limit highly processed foods and sugary drinks.
Read ingredient labels before buying packaged foods. This is super important!! Many "healthy" foods aren't.
Remember, the best runners aren't simply those who train the hardest. They're the runners who consistently make choices that help their bodies perform at their best. And our bodies perform at our best when we treat them well by training properly and eating properly. After all, what you put in is what you get out right?
And there you have it friends. Those are some great reasons to limit your intake of "junk food," aka fast food and ultra processed food, even if you're not training for one of the great events that the Bass Pro Fitness Series has to offer. But if you're not training, I have great news! There's still time to get signed up. Hope to see you at the start line! Happy Running!