13 foods that give you energy (and why they work)

Feeling your energy fade in the afternoon? Your morning coffee wearing off may not be the only reason. The foods you eat and how much you eat can have an impact on how energized you feel throughout the day.

Reaching for more coffee or something sweet might seem like the quickest way to power through an energy slump. But the boost may not last. Understanding how different foods affect your blood sugar can help you make choices that support steadier energy for longer.

The goal isn’t just a quick burst of energy. It’s choosing foods that help fuel you for what comes next.

Let’s take a closer look at how to eat for real, lasting energy.

Why some foods give you energy (and others don't)

When you eat something high in added sugar or simple carbohydrates, such as a donut, a soda or a big bowl of white pasta, your blood sugar spikes quickly. 

Your body responds by releasing insulin to bring it back down, and often, it overcorrects. That drop is what you might describe as the "crash" you feel afterwards, which poses as fogginess, irritability or a sudden need for a nap.

To avoid that crash, it’s important to focus on combining different food groups:

• Protein like fish, tofu, poultry or lean beef
• Fiber-rich carbohydrates, such as whole grains, oats, quinoa, sweet potatoes or brown rice, which provide higher fiber
• Healthy fats, like avocado, nuts, seeds or olive oil

Your body digests this combination of food groups more slowly, which means a gentler, more gradual rise in blood sugar, and a steadier, more streamlined supply of fuel to your brain and muscles over the next few hours.
 

Related: Sugar and your health: The truth is not so sweet

13 foods that give you energy to add to your plate

What you eat affects how you feel, not just physically, but also emotionally. Roughly 90% of your body's serotonin, a neurotransmitter tied to mood regulation, is produced in your gut. That means gut health, blood sugar stability and your mood are far more connected than you might think.

Real, sustained energy and a steadier mood often come from the same place, your plate. The foods below combine protein, fiber, healthy fats, and fiber-rich carbs to keep you fueled without the crash while also helping to boost your memory, focus and mood.

1. Eggs

   Eggs are one of the most complete protein sources available, and protein takes longer to digest than carbohydrates, meaning it helps you feel fuller and steadier for longer. Eggs are also rich in B vitamins, which your cells use to convert food into usable energy. At breakfast, a couple of scrambled eggs with vegetables make a far more stabilizing breakfast than just a bowl of cereal.

2. Fermented foods

   A healthy gut plays a bigger role in energy and mood than you might realize. Fermented foods like Greek yogurt, kimchi, miso and sauerkraut support your gut health by promoting a more diverse and healthy gut microbiome, which plays a role in digestion and immune function. Fermentation can also increase the availability of beneficial compounds and nutrients, while some fermented foods provide live microorganisms that may contribute to a healthy gut environment.

   Greek yogurt, for example, delivers a solid dose of protein along with probiotics that support your gut health. Mix a cup of plain, unsweetened Greek yogurt with some berries to slow your digestion even further.

Related: How to improve gut health

3. Salmon

   Salmon is rich in omega-3 fatty acids, which support brain function and have been linked to improved mood and reduced mental fatigue. It's also a lean protein, making it a smart choice for a lunch or dinner that won't leave you sluggish an hour later.

   Make this at home: Hot honey salmon fried rice

4. Oats

   Oats are a fiber-rich carbohydrate loaded with fiber, which slows the release of glucose into your bloodstream. That translates to steady energy through the day rather than a mid-morning nosedive. Skip the flavored instant packets, which are typically loaded with sugar, and opt for plain oats topped with fruit or nut butter.

Related: Need more breakfast inspiration? Here are 5 high-protein breakfast ideas.

5. Sweet potatoes

   Like oats, sweet potatoes are a fiber-rich carbohydrate, but they also include vitamin A and potassium. Potassium plays a role in your muscle function and can help fend off the sluggish feeling that comes with mild dehydration or an electrolyte imbalance.

6. Quinoa

   Quinoa is a plant-based food that is considered a complete protein, meaning it contains all nine essential amino acids. Combined with its high fiber content, it's a strong base for a power-packed lunch that can keep you going through a late afternoon meeting and beyond.

7. Nuts

   Nuts bring healthy fats and a bit of protein, both of which slow digestion and help prevent the blood sugar swings that come from carb-only snacking. They're also portable, which sometimes matters more than nutrition science on a hectic day.

   Walnuts, for example, contain mood-elevating serotonin and are an excellent source of ALA (alpha-linolenic acid), the plant form of omega-3 fats.

   One ounce, or a small handful, is typically considered a single serving of whole nuts. Go with raw or roasted, unsalted nuts. Try to limit or avoid honey-roasted, sugar-coated or heavily salted nuts, which add excess calories, unhealthy saturated fats and high sodium (salt) levels.

8. Avocado

   Avocado is rich in monounsaturated fats, which support steady energy and have been associated with better heart health over time. Add it to eggs, whole wheat toast or a vegetable-filled salad to make any meal more slow-digesting and satisfying.

9. Leafy greens

   Spinach, kale and other leafy greens are high in iron and folate. Iron is essential for carrying oxygen through your bloodstream, and low iron is one of the most common causes of persistent fatigue, especially in women. Pairing leafy greens with other vegetable varieties will increase fiber intake, therefore resulting in higher satiety.

10. Lentils

    Lentils combine plant-based protein, fiber and iron in one food, making them an efficient energy-supporting food to add to your meals. They're an easy stir-in for soups, grain bowls or salads.

11. Berries

    Despite their small size, berries pack a big punch. They’re loaded with fiber, antioxidants and vitamin C, which can help fight off stress. Berries also protect the brain from chronic inflammation, which can slow down energy production in brain cells and may lead to mental fatigue and brain fog.

12. Water-rich fruits

    Dehydration is a common cause of fatigue and brain fog. Even mild dehydration can leave you feeling tired and unfocused before you notice you're thirsty. In addition to pairing water with your meals and in between meals, adding water-rich fruits such as oranges and cucumbers supports hydration while still offering fiber and natural sugars in a form your body handles well.

13. Bananas 

    Bananas provide vitamin B6, a nutrient involved in producing neurotransmitters such as serotonin and dopamine that influence your mood. Their combination of natural carbohydrates and fiber can also provide steady energy, while pairing a banana with protein or healthy fat can help support more stable blood sugar levels.

4 foods and drinks that cause an energy crash

If the foods above are the slow burn that will help sustain your energy throughout the day, these foods below are the ones that start up fast but also burn out fast, too:

• Sugary snacks, drinks and desserts give you a quick surge in energy and a quick crash
• White bread, pastries and other refined carbs such as white rice, pasta, crackers or pretzels and some breakfast cereals are digested almost as fast as sugar
• Energy drinks and excess caffeine can spike your alertness temporarily, but they often lead to a harder crash and, over time, disrupted sleep
• Alcohol can disrupt your sleep quality even if consumed in small amounts, which typically shows up as fatigue or a feeling of sluggishness the following day

Don’t think that these foods are off-limits forever—you can have them occasionally. But it is helpful to know what they're doing to your body when maintaining your energy is the goal.

Watch when you eat, not just what you eat

When you eat is just as important as what you eat. Life gets busy and sometimes we forget to eat a meal and end up with extra snacks or just skip over a meal entirely. Don’t let this be a common occurrence. Skipping meals can lead to low blood sugar, which your body often overcorrects for by craving the crash-prone foods above. Try to incorporate these three tips:

1. Plan your day as best you can and aim to eat smaller, more frequent meals at consistent times each day when possible.
2. Enjoy healthy, balanced snacks between meals to prevent energy dips.
3. Drink plenty of water throughout your day. These hydration hacks can help vary it up a bit if plain water gets boring.

Tips to build an energy-sustaining, mood-boosting plate

You don't need to memorize a full list of foods to ensure you are eating well for your energy levels. You need a simple framework that combines:

protein + a fiber-rich carbohydrate + a healthy fat

When you try combinations of the foods you enjoy and figure out what helps you maintain your energy throughout the day, you'll become more adept at how to build meals that keep you steady for hours instead of bracing for the inevitable crash when you aren’t eating energy-boosting foods.

None of these require complicated recipes or a visit to a specialty grocery store for ingredients. The goal of incorporating energy and mood-boosting foods is to create a pattern, and by pairing food groups, you can repeat it throughout the week in an easy and sustainable fashion.

Here’s a sample menu with energy-boosting foods:

When fatigue might be more than your diet

Food can make a real difference in your energy level, but it isn't a cure-all. Food should not be a substitute for mental health care or a need to improve sleep habits. No single food will fix a difficult day.

If you're eating well and still dealing with persistent feelings of fatigue, unexplained mood changes or energy crashes that don't improve, it may be worth talking to your doctor. 

Certain conditions like anemia, thyroid disorders, sleep apnea and depression can present as fatigue, and they're worth ruling out rather than guessing about.

Are you eating foods that give you energy but still feeling tired? Talk to your doctor or connect with a dietitian today.