We’ve all experienced that mid-afternoon slump when energy levels plummet and staying awake feels like a struggle. If afternoon fatigue is a regular occurrence for you, identifying the potential causes can help you take steps to fight afternoon tiredness. Here are some of the most common reasons you may feel drained in the afternoon.
Not Enough Sleep
One of the most obvious yet overlooked reasons for afternoon tiredness is not getting enough sleep. Adults should aim for 7-9 hours of sleep per night. If you routinely get less than 7 hours, chronic sleep deprivation will likely leave you feeling sluggish in the afternoons. Try going to bed 15-30 minutes earlier each night to ensure you’re getting sufficient high-quality sleep. Establishing a regular sleep-wake schedule and limiting screen time before bed can also improve sleep.
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Poor Diet
What you eat impacts your energy levels throughout the day. Consuming too many refined carbs and sugars for breakfast or lunch can lead to a blood sugar spike followed by a crash, triggering afternoon drowsiness. Instead, opt for complex carbs, lean protein, healthy fats and fruits/veg to provide sustained energy. Stay hydrated by drinking enough water, and limit caffeine to avoid peaks and crashes.
Not Enough Physical Activity
Sitting for too long can make you feel tired, especially after eating a big lunch. Get your blood pumping and boost energy by fitting in at least 30 minutes of exercise per day. Even a brief walk outside or doing bodyweight exercises like squats lifts and push-ups can perk you up in the afternoon. Moving your body helps increase circulation and oxygen to the brain.
Stress, Anxiety or Depression
Mental health issues like ongoing stress, anxiety and depression can manifest physically through constant tiredness and low energy. Practicing relaxation techniques like deep breathing, meditation or yoga nidra helps lower stress hormones in the body linked to fatigue. Additionally, confiding in a friend or family member, journaling and exercising can help manage difficult emotions to boost daily energy levels.
Underlying Health Condition
Certain medical conditions are associated with increased daytime sleepiness and low energy. Examples include anaemia (iron deficiency), underactive thyroid, diabetes and sleep apnea. See your GP if you suspect an underlying condition may be causing persistent afternoon fatigue, and get tested to determine if treatment is required. Taking prescribed medications properly is also important.
Dehydration
Not drinking enough water throughout the day is another common reason for midday tiredness. When you are dehydrated, blood volume is reduced and less oxygen reaches the brain, leaving you mentally and physically drained. Sip water regularly, and have a glass before feelings of fatigue set in. Cut back on sugary and caffeinated beverages which can dehydrate. Eating water-rich fruits and veg also helps increase fluid intake.
Heavy Lunch
A large lunch high in carbohydrates and calories triggers the release of insulin, which promotes sleepiness. Avoid heavy lunches by limiting portions and choosing healthier options. Balance protein, complex carbs and veggies to stabilise blood sugar and energy. After a big lunch, go for a 15-minute walk outside to boost wakefulness before your food coma sets in.
Making positive changes to your daily habits can often provide an energy boost when you need it most.