Foods That Give You Energy: What to Eat to Avoid Crashes

01How

How food affects energy levels

Carbohydrates are the body’s main fuel. Refined carbohydrates and sugary foods are digested quickly, causing a rapid rise and then a fall in blood sugar, which can leave you feeling tired and hungry. Wholegrains, legumes and vegetables release energy more slowly because of their fibre. Protein and fat slow digestion further and help keep you full. Vitamins and minerals such as iron, vitamin B12 and folate are needed to make red blood cells and release energy from food. Dehydration can also cause fatigue and poor concentration.

02List

20 foods that give you energy

• Oats: slow-release carbs and soluble fibre.
• Wholegrain bread and pasta.
• Brown rice and quinoa.
• Sweet potatoes and potatoes with skins.
• Beans, lentils and chickpeas: carbs, protein, fibre and iron.
• Eggs: protein, B12 and other B vitamins.
• Greek yoghurt: protein and calcium.
• Nuts and nut butters.
• Seeds: pumpkin, chia, sunflower.
• Oily fish: salmon, sardines, mackerel.
• Lean red meat: iron and B12.
• Chicken and turkey.
• Tofu and tempeh.
• Bananas: quick carbs with fibre and potassium.
• Apples and pears.
• Berries.
• Oranges and kiwi: vitamin C helps absorb iron from plant foods.
• Dark green leafy vegetables: spinach, kale, broccoli.
• Fortified breakfast cereals: iron, B12 and folic acid.
• Water, often overlooked.

03Combos

Energy-boosting combinations

• Porridge with milk, nuts and berries.
• Wholegrain toast with eggs or peanut butter.
• Greek yoghurt with fruit and seeds.
• Lentil soup with wholegrain bread.
• Salmon, quinoa and vegetables.
• Apple with a handful of almonds.
• Hummus with vegetable sticks and wholegrain crackers.

04Habits

Eating habits for steady energy

• Eat breakfast, especially if you feel sluggish in the morning.
• Eat regularly, every three to four hours, rather than having long gaps.
• Avoid very large meals, which can make you sleepy.
• Include protein and fibre at each meal.
• Swap sugary snacks and drinks for fruit, nuts or yoghurt.
• Drink water throughout the day.
• The Eatwell Guide offers a simple model for balanced meals.

05Avoid

Foods and drinks that can drain energy

• Sugary drinks and sweets: quick spike followed by a dip.
• Energy drinks: high in caffeine and sugar, can disturb sleep.
• Too much caffeine: the NHS suggests trying to cut it out gradually for three weeks to see if you feel less tired.
• Alcohol: disrupts sleep and causes dehydration.
• Heavy, fatty meals that are slow to digest.
• Skipping meals or very low-calorie diets.

06Iron

Iron and B12: common causes of low energy

Iron deficiency anaemia is one of the most common nutritional causes of tiredness, particularly in women with heavy periods, pregnant women, and people who eat little meat. Symptoms include tiredness, breathlessness, pale skin and palpitations. Iron-rich foods include red meat, beans, lentils, tofu, fortified cereals, dried apricots and dark green vegetables. Vitamin B12 deficiency, more common in vegans, older adults and people with certain gut conditions or medicines, also causes fatigue. Both are diagnosed with a blood test and treated with diet and supplements if needed.

07Exercise

Food before and after exercise

Eating a light meal containing carbohydrates and some protein two to three hours before exercise, or a small snack such as a banana 30–60 minutes before, can improve energy. Afterwards, a meal or snack with protein and carbohydrates supports recovery. Our guide to post-workout recovery drinks covers options.

08Beyond

Beyond food: other causes of tiredness

• Not enough sleep, or poor-quality sleep.
• Stress, anxiety and depression.
• Lack of physical activity; regular exercise increases energy.
• Being overweight or underweight.
• Medical conditions such as thyroid disease, diabetes, coeliac disease and sleep apnoea.
• Side effects of medicines.

09Cases

Three common situations

• Afternoon energy slump: have a balanced lunch with protein and wholegrains and a small mid-afternoon snack.
• Tired all the time with heavy periods: ask a doctor to check for iron deficiency.
• Vegan feeling tired: make sure you get B12 from fortified foods or supplements.

10Breakfast

Energy-friendly breakfast ideas

• Overnight oats with milk or yoghurt, chia seeds and berries.
• Scrambled eggs with spinach on wholegrain toast.
• Greek yoghurt with banana, walnuts and a drizzle of honey.
• Wholegrain cereal fortified with iron and B12, with milk and fruit.
• A smoothie with milk, oats, banana and peanut butter for busy mornings.
• More ideas in our guide to high-fiber breakfasts.

11Summary

Key points to remember

• Combine slow-release carbs with protein, fibre and healthy fats.
• Eat regularly and drink enough water.
• Limit sugary foods, energy drinks, caffeine and alcohol.
• Persistent tiredness needs a medical check.