How to Increase Energy Levels: 8 Science-Backed Methods

The most reliable ways to increase your energy levels are consistent sleep of 7 to 9 hours, regular meals built around slow-release carbohydrates and protein, daily movement, careful caffeine timing, less alcohol and getting stress under control. None of them work overnight, but each has solid evidence behind it. If you have given them a genuine go and still feel flat after two weeks, see a doctor, because persistent fatigue can have a medical cause.

This guide walks through each method, what the research actually says, and the point at which tiredness stops being a lifestyle problem and becomes a health question.

Why is my energy so low in the first place?

Fatigue rarely has a single cause. Common lifestyle culprits include poor sleep, too little exercise, a diet heavy in refined carbohydrates and regular alcohol (Healthdirect).

The psychological side is bigger than most men expect. Studies suggest between 50 and 80 per cent of fatigue cases are mainly due to psychological factors such as stress, anxiety and low mood (Better Health Channel).

Medical conditions matter too. Anaemia, thyroid problems, sleep disorders, diabetes and hormonal changes are all recognised causes of ongoing tiredness (Healthdirect). That is why fatigue that ignores your best lifestyle efforts deserves a medical review rather than another coffee.

1. Sleep 7 to 9 hours on a consistent schedule

Most adults need between 7 and 9 hours of sleep a night to feel refreshed and function at their best (Sleep Health Foundation). Regularity counts as much as the total.

A few habits do most of the work:

• Go to bed and get up at the same times every day, weekends included.
• Put screens away an hour before bed. The light from phones and laptops suppresses melatonin, the hormone that tells your body it is time to sleep.
• Keep the bedroom cool, dark and quiet.
• Skip late naps if you struggle to fall asleep at night.

Sleep and hormones are closely connected in men. Our guide on how rest affects testosterone and sexual health covers that link in detail.

2. Eat regular meals that release energy slowly

Skipping meals and then eating a large one sets up the classic surge and slump. Eating at regular intervals, with smaller meals more often, keeps blood sugar and energy steadier through the day (Better Health Channel).

Build meals around:

• Complex carbohydrates such as oats, wholegrain bread and sweet potato for slow-release energy.
• Lean protein such as eggs, fish, chicken and tofu.
• Iron-rich foods such as red meat, lentils and spinach. Iron deficiency is a common and treatable cause of tiredness.
• Nuts, seeds and fruit as snacks instead of sugary options that spike and crash (Healthline).

For a fuller picture of what a working week of food should look like, read our complete guide to men's nutrition.

3. Drink enough water

Even mild dehydration can show up as tiredness and poor concentration. There is no single target that suits everyone, since needs shift with body size, climate and how much you sweat. As a rough marker, nutrition bodies cited by Healthline put total daily fluid needs for men at about 3.7 litres, which includes the water contained in food and other drinks (Healthline).

The practical version: keep a water bottle at your desk, have a glass with each meal, and drink extra around exercise.

4. Move most days, even briefly

It sounds backwards, but spending energy is how you build it. Regular moderate exercise improves how efficiently your heart and blood vessels deliver oxygen and nutrients to your tissues, and it deepens sleep (Harvard Health).

You do not need a training program to start:

• A brisk 20-minute walk at lunch.
• Light stretching in the morning.
• Short bodyweight sessions at home a few times a week.

Movement pays off in other areas of men's health as well. See our guide on how exercise improves erectile function.

5. Use caffeine deliberately

Coffee is not the enemy. Used sensibly, caffeine sharpens alertness. The problems start when you drink too much or too late in the day. Caffeine in the afternoon or evening shallows that night's sleep, which quietly borrows energy from tomorrow.

Keep coffee to the morning and early afternoon, and keep total intake moderate. US regulators cited by Healthline suggest staying under about 400 milligrams of caffeine a day, roughly four small coffees (Healthline). If you need coffee to survive every afternoon, treat that as information about your sleep, food or stress rather than a supply problem.

6. Go easy on alcohol

Alcohol is a sedative. Harvard Health points out that one of the strongest predictors of an afternoon slump is a drink with lunch, and that evening alcohol disturbs the second half of your sleep (Harvard Health). You fall asleep faster but wake less rested.

Cutting weeknight drinks is one of the quickest changes most men notice in their morning energy.

7. Get on top of stress

Chronic stress consumes an enormous amount of energy, which is consistent with how large a share of fatigue cases have a psychological driver. Practical approaches include brief daily breathing exercises (in for 4 counts, out for 8), regular exercise, firmer boundaries around work hours and talking honestly with someone you trust.

Stress techniques help, but they are not a treatment for anxiety or depression. If stress or low mood has hung around for more than a couple of weeks, or it is affecting your sleep, work or relationships, speak to your GP or a psychologist.

8. Ask about your hormones if nothing shifts

For men, persistently low energy alongside poor sleep, reduced libido or mood changes can sometimes involve low testosterone (Healthdirect). The only way to know is a blood test, ideally taken in the morning when levels are at their highest, with a second test to confirm because levels naturally fluctuate.

Not every tired man has low testosterone, and treatment is only considered where a doctor confirms a deficiency and judges it clinically appropriate. If the pattern sounds familiar, our article on the 12 key symptoms of low testosterone in men over 40 is a sensible place to start, and you can read about how doctor-led hormone restoration works at Menova.

When should you see a doctor about fatigue?

Healthdirect advises seeing a doctor if tiredness lasts more than two weeks despite reasonable sleep, food and activity, and sooner if it stops you doing daily tasks or arrives with other symptoms such as unexplained weight loss (Healthdirect).

A consultation is the sensible first step. Menova Health's doctors consult online and can assess whether your symptoms warrant testing, starting with a short assessment. Whatever route you take, keep your regular GP informed so your care stays joined up.

Frequently asked questions

How much sleep do I need to feel energetic?

Most adults need 7 to 9 hours a night, according to the Sleep Health Foundation. Consistency matters as much as the total. Going to bed and waking at the same times each day, weekends included, keeps your body clock steady and your daytime energy more even.

Why am I still tired after a full night's sleep?

Waking unrefreshed can point to poor sleep quality, a sleep disorder such as sleep apnoea, stress, low mood, iron deficiency, thyroid problems or low testosterone. If it keeps happening, or fatigue has lasted more than two weeks, see a doctor. Basic blood tests may help identify a cause.

Is coffee good or bad for energy?

Caffeine in moderation genuinely improves alertness. It becomes a problem when intake creeps up or drifts into the afternoon, because it disturbs that night's sleep. Keep coffee to the morning and early afternoon, and stay under roughly 400 milligrams of caffeine a day.

What foods give the steadiest energy?

Complex carbohydrates such as oats, wholegrains and sweet potato, paired with lean protein and healthy fats from nuts and seeds. Iron-rich foods matter because iron deficiency is a common cause of fatigue. Regular smaller meals beat one heavy lunch that leaves you slumped by mid afternoon.

Can low testosterone make you tired?

Yes, lower energy is a recognised symptom of low testosterone, often alongside poor sleep, reduced libido and mood changes. A morning blood test, repeated to confirm, may help identify whether your levels are low. A doctor interprets the results in the context of your overall health.

How much water should I drink to avoid fatigue?

Needs vary with body size, climate and activity, so there is no universal number. Total daily fluid needs for men are often estimated at about 3.7 litres, including the water in food and other drinks. In practice, drink regularly through the day and more around exercise.

Does exercise increase energy or wear you out?

Regular moderate exercise increases energy over time by improving circulation and sleep quality. Start small. A brisk 20-minute walk most days is enough to notice a difference, and you can build gradually. Very hard training on poor sleep can add to fatigue, so match effort to recovery.

References

• Healthdirect, Fatigue: https://www.healthdirect.gov.au/fatigue
• Healthdirect, Testosterone: https://www.healthdirect.gov.au/testosterone
• Sleep Health Foundation, How much sleep do you really need: https://www.sleephealthfoundation.org.au/sleep-topics/how-much-sleep-do-you-really-need
• Better Health Channel, Fatigue fighting tips: https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/fatigue-fighting-tips
• Harvard Health Publishing, 9 tips to boost your energy, naturally: https://www.health.harvard.edu/healthbeat/9-tips-to-boost-your-energy-naturally
• Healthline, 12 foods and eating habits to boost energy and beat fatigue: https://www.healthline.com/health/food-nutrition/foods-that-beat-fatigue