How to Get More Energy During the Day Naturally

Sustained daytime energy depends less on any single supplement or trick and more on how well you align everyday habits with the biological systems that regulate alertness. Light exposure, movement, hydration, breathing patterns, and even the air quality in your workspace all influence how awake you feel, and most of them are adjustable without spending a cent. The research behind these strategies is more specific and actionable than generic advice to “sleep more and eat better” usually suggests.

Get Bright Light Early

Your body’s internal clock relies heavily on light signals to calibrate hormones, body temperature, and alertness cycles. Bright light exposure in the morning suppresses melatonin and helps set the timing for when you’ll feel sharpest and when you’ll wind down. A controlled study of twenty adults found that roughly six and a half hours of bright light at about 10,000 lux significantly reduced plasma cortisol levels compared to dim light, supporting a direct pathway by which light modulates the adrenal system.¹ In practical terms, this means that spending time outdoors in the morning, even for fifteen to twenty minutes, can meaningfully shift your alertness. Overcast daylight still delivers thousands of lux, far more than a typical office. If you work indoors under artificial lighting all morning, you’re effectively telling your brain it’s always dusk.

The flip side of this coin matters, too. Exposure to bright screens or overhead lights late at night delays the same clock, pushing your alert phase later into the morning and making it harder to feel energized at a conventional wake time. If you’re dragging every morning despite sleeping enough hours, the timing of your light exposure may be the first thing worth adjusting.

Move in Short Bursts Throughout the Day

Exercise reliably reduces daytime sleepiness in healthy people and improves overall sleep quality, which feeds back into better daytime alertness. Research reviews consistently show that physical activity decreases daytime sleepiness, and guidelines from the National Sleep Foundation recommend at least 150 minutes of aerobic exercise per week for sleep-related benefits, with additional help from strength training and yoga.² What often gets missed, though, is that you don’t have to do all of it in one gym session. Short walks, stair climbs, or even a few minutes of bodyweight movement during a work break can interrupt the slide into afternoon sluggishness.

There’s a posture component here, too. A study of sleep-deprived subjects found that simply standing upright significantly attenuated the brain-wave changes associated with drowsiness, and psychomotor performance stayed close to well-rested levels when participants stood, compared with noticeable deterioration when seated.³ Even if you can’t leave your desk, standing for a stretch or switching to a standing position can pull you out of a dip. A simulated-workday trial of overweight and obese adults found that using a sit-stand desk attenuated the rise in sleepiness over the day compared to sitting the entire time.⁴

Drink Water Before You Reach for Coffee

Mild dehydration, the kind that can develop from simply not drinking enough over a few hours, has measurable effects on how alert you feel. A controlled study in which women’s fluid intake was progressively restricted found that even mild dehydration led to decreased alertness and increased sleepiness, fatigue, and confusion.⁵ The researchers noted that the most consistent effects of mild dehydration on mood were changes in sleep-wake feelings. This matters because most people interpret afternoon tiredness as needing caffeine or a nap, when the issue might just be that they haven’t had water since lunch.

A useful check: if your urine is darker than pale yellow, you’re probably behind. Caffeine itself is a mild diuretic, so relying on coffee alone can deepen the problem. Starting the morning with a full glass of water and keeping a bottle visible during the workday is low-effort and addresses one of the most common hidden causes of flagging energy.

Keep Your Blood Sugar Steady

The post-lunch crash is so universal that people treat it like an unavoidable law of biology, but a large part of that crash comes from how your body handles glucose. When blood sugar spikes sharply after a carbohydrate-heavy meal, the insulin response that brings it back down can overshoot, leaving you drowsy. A clinical report documented two young adults whose excessive postprandial sleepiness was severe enough to mimic a sleep disorder. Glucose tolerance testing showed patterns of insulin resistance in both patients, and treatment with antidiabetic medications resolved their daytime sleepiness entirely.⁶ Those were extreme cases, but the underlying mechanism, blood sugar volatility driving drowsiness, operates on a spectrum.

You don’t need medication to address ordinary post-meal energy dips. Pairing carbohydrates with protein, fat, or fiber slows glucose absorption and flattens the spike-and-crash cycle. Choosing whole grains over refined ones, adding nuts or cheese to a snack, or eating vegetables at the start of a meal are all practical buffers. If you find yourself reliably sleepy ninety minutes after eating, your meal composition is a more productive target than your willpower.

Nap Strategically, Not Generously

Naps work, but their length determines whether they leave you refreshed or groggy. A study testing nap durations from ten to sixty minutes found that all of them improved mood and reduced self-reported sleepiness for up to four hours afterward. However, naps of thirty to sixty minutes produced sleep inertia, that disoriented, sluggish feeling upon waking, which took up to thirty minutes to clear.⁷ A separate randomized crossover trial of simulated night-shift workers found that cognitive deficits after both thirty-minute and two-hour naps dissipated within ten to thirty minutes of waking.⁸

The practical takeaway: if you have a meeting or demanding task right after a nap, keep it under twenty minutes so you skip the inertia entirely. If you have a buffer of about half an hour before you need to perform, a thirty-minute nap gives you the added benefit of improved memory encoding. The worst strategy is the unplanned two-hour nap on the couch, which both disrupts nighttime sleep and leaves you worse off for the first thirty minutes after waking.

Try Breathwork or Non-Sleep Deep Rest

For people who can’t nap at work or don’t want to, structured rest that doesn’t involve sleep can still shift your state. Non-sleep deep rest, or NSDR, typically involves lying down, closing your eyes, and following a guided body-scan or relaxation protocol without actually falling asleep. A controlled study in physically active young adults found that a single NSDR session significantly reduced sleepiness, fatigue, and stress while enhancing self-rated mental performance and overall recovery, compared to a passive control condition.⁹ Heart rate also dropped more in the NSDR group, suggesting genuine physiological downregulation rather than a placebo effect. A separate study confirmed benefits to physical readiness, emotional balance, and reduced tension from NSDR compared to a control period.¹⁰

If even lying down isn’t practical, focused breathing exercises offer a faster option. A randomized controlled trial compared three types of five-minute daily breathwork with mindfulness meditation over one month and found that breathwork, especially cyclic sighing (where you emphasize long, slow exhales), produced greater improvement in mood and a larger reduction in respiratory rate than meditation did.¹¹ Five minutes of deliberate slow exhaling at your desk is free, invisible to coworkers, and backed by a month-long trial comparing it head-to-head with a well-established alternative.

Align Your Schedule With Your Chronotype

Not everyone’s alertness peaks at the same time. Early chronotypes (natural early risers) and late chronotypes (people who naturally stay up late and sleep in) have genuinely different profiles for when they perform best. A study measuring daytime sleepiness, reaction time, executive function, and grip strength found that late chronotypes were significantly impaired across all of those measures in the morning compared to early chronotypes.¹² A broader review concluded that the strongest driver of cognitive performance differences across the day is the match between an individual’s chronotype and the time of testing, with large variation between age groups.¹³

If you’re a late chronotype forced into a nine-to-five schedule, your low energy in the morning isn’t laziness or poor sleep hygiene. It’s a mismatch between your biology and your timetable. Where you can, schedule demanding cognitive work during your peak window and put routine tasks in your trough. Even small scheduling shifts, like moving a creative project from eight a.m. to eleven a.m., can make you feel like a different person without changing anything else about your routine.

Check Your Air and Your Room

The quality of air in your workspace has a more direct effect on alertness than most people realize. A study of office workers exposed to elevated indoor carbon dioxide levels found that higher CO₂ concentrations increased both transcutaneous CO₂ levels in the blood and self-reported sleepiness during cognitive work.¹⁴ CO₂ concentrations climb in any poorly ventilated room with people in it, and meeting rooms with closed doors are especially bad. If you’ve ever noticed that you feel foggy in a crowded conference room but perk up the moment you step into the hallway, that’s not your imagination.

Opening a window, running a fan, or stepping outside periodically can make a real difference. If you work from home, small rooms with the door closed accumulate CO₂ faster than you might expect. Cheap CO₂ monitors are widely available, and watching the numbers climb in a sealed room is surprisingly motivating. Keeping levels below about 1,000 parts per million is a reasonable target for maintaining alertness.

Cold Exposure and Upbeat Music

Two quick interventions that can reset your state in minutes are cold exposure and music. A study of short-duration cold-water immersion found that participants reported feeling more active, alert, and attentive afterward, along with reductions in distress and nervousness. Brain-imaging data showed increased interaction between large-scale neural networks associated with attention and salience.¹⁵ You don’t need an ice bath to tap into this effect. Splashing cold water on your face, ending a shower with thirty seconds of cold water, or holding a cold pack against the back of your neck are lower-commitment versions that most people can manage at home or at work.

Music, particularly at a higher tempo, also reduces drowsiness in measurable ways. A study monitoring brain waves, heart rate, and performance in drivers found that listening to music during a task reduced physiological and self-reported drowsiness compared to the same task without music, with higher-tempo music producing the strongest effect.¹⁶ If you hit a wall during a repetitive work stretch, putting on something upbeat for ten minutes is a legitimate physiological intervention, not just a mood boost.

When Low Energy Points to Something Medical

All of the strategies above assume your fatigue is lifestyle-driven. But persistent low energy that doesn’t improve despite good sleep, exercise, hydration, and nutrition deserves medical investigation. A clinical review of fatigue presentations in primary care noted that a careful history, physical exam, and a few directed lab tests can usually distinguish between fatigue caused by depression, situational stress, endocrine disorders, sleep disorders, infectious diseases, autoimmune conditions, or medication side effects.¹⁷

Iron deficiency is one of the most common and most overlooked culprits. Iron deficiency severe enough to cause anemia currently affects over a billion people worldwide, and iron deficiency without anemia is estimated to be at least twice as common. This milder form is poorly recognized by clinicians despite its high prevalence, probably because screening recommendations don’t catch it reliably.¹⁸ If your hemoglobin comes back normal but your ferritin (the protein that stores iron) is low, you can still experience fatigue, brain fog, and exercise intolerance. This is especially common in menstruating women, frequent blood donors, and endurance athletes. Asking your doctor specifically about ferritin, not just a standard blood count, is worth the effort.

Thyroid disorders, vitamin B12 deficiency, and sleep apnea are other frequent findings that masquerade as “just being tired.” If you’ve addressed the obvious lifestyle factors and still feel drained, a blood panel and a conversation with your doctor can rule out conditions that no amount of cold showers or breathwork will fix.

Gut Health and Emerging Research on Fatigue

An area that’s generating increasing interest is the relationship between the gut microbiome and systemic energy levels. Researchers studying patients with chronic fatigue syndrome have found that certain beneficial bacterial families are depleted in people with severe fatigue, and that short-chain fatty acids produced by those bacteria correlate inversely with fatigue severity. The science is still early, and no one can yet prescribe a specific probiotic to fix afternoon tiredness. But the direction of the research suggests that a diet rich in fiber, fermented foods, and diverse plant matter supports the microbial communities that may, over time, contribute to better energy regulation. If nothing else, it’s one more reason to eat vegetables at lunch instead of a white-bread sandwich.