Why Do We Feel More Energetic at Night?

June 17, 2023

Have you ever noticed that you feel more alive and energetic when the night falls, even after a long day of work? Many people experience this phenomenon and wonder why it happens. In this discussion, we will explore the possible reasons behind this and delve into the science behind our bodies’ energy levels during the evening hours.

The Circadian Rhythm and Its Impact on Energy Levels

The circadian rhythm is a fundamental biological process that regulates the sleep-wake cycle. It influences our energy levels throughout the day, helping us to feel more alert and focused during the day and more relaxed and sleepy at night. The circadian rhythm is controlled by the suprachiasmatic nucleus (SCN), a tiny region in the brain that responds to light and darkness. When light hits the retina, it sends signals to the SCN, which in turn communicates with other areas of the brain to regulate the release of hormones, including melatonin and cortisol. Melatonin helps us feel sleepy, while cortisol helps us feel more alert and energized.

Melatonin and Its Role in Sleep

Melatonin is a hormone that is secreted by the pineal gland in the brain. It helps to regulate the sleep-wake cycle, promoting sleepiness at night and wakefulness during the day. Melatonin levels begin to rise in the evening, reaching their peak in the middle of the night, and then drop off in the early morning hours. This natural increase in melatonin production at night is one reason why we feel more energetic during the day.

Cortisol and Its Role in Energy

Cortisol is a hormone that is produced by the adrenal gland. It helps to regulate the body’s response to stress and plays a role in the sleep-wake cycle. Cortisol levels are highest in the morning and gradually decrease throughout the day, reaching their lowest point at night. This natural decrease in cortisol production at night is another reason why we tend to feel more energetic at this time.

The Impact of Technology on Energy Levels

While our natural circadian rhythm plays a significant role in our energy levels, other factors can impact our ability to feel alert and focused. One such factor is technology, specifically blue light emitted by electronic devices such as smartphones, tablets, and computers. Blue light can suppress the production of melatonin, making it harder for us to fall asleep at night and easier for us to feel tired and sluggish during the day.

One key takeaway from this text is that our energy levels throughout the day are largely influenced by our circadian rhythm, which is controlled by the suprachiasmatic nucleus in the brain. Melatonin plays a role in feeling sleepy at night, while cortisol helps us feel more alert and energized during the day. Technology use, particularly exposure to blue light, can disrupt our natural sleep-wake cycle, so it’s important to limit technology use in the evening and take regular breaks throughout the day. Other factors that impact energy levels include diet, exercise, sleep, and stress, so it’s important to maintain a healthy lifestyle to support overall energy levels and productivity.

Tips for Managing Technology Use

To minimize the impact of technology on your energy levels, try the following:

  • Limit technology use in the evening, especially before bedtime.
  • Use a blue light filter on your electronic devices.
  • Make your bedroom a technology-free zone.
  • Take regular breaks from technology use throughout the day.

Other Factors That Impact Energy Levels

While the circadian rhythm and technology use are two significant factors that influence our energy levels, other factors can impact our ability to feel alert and focused. These include:


Eating a well-balanced diet that includes plenty of fruits, vegetables, and whole grains can provide the nutrients and energy needed to fuel the body throughout the day. Consuming too many processed foods and sugar-laden drinks can lead to energy crashes and feelings of fatigue.


Regular exercise can help to boost energy levels by improving circulation, reducing stress, and increasing endorphin production. Aim for at least 30 minutes of moderate exercise per day, such as brisk walking, cycling, or swimming.


Getting enough sleep is critical for maintaining energy levels throughout the day. Aim for 7-9 hours of quality sleep per night, and establish a consistent sleep schedule to support your circadian rhythm.


Chronic stress can lead to feelings of fatigue, burnout, and decreased productivity. Practicing stress-reduction techniques, such as meditation, deep breathing, or yoga, can help to alleviate stress and improve energy levels.

FAQs for Why Am I More Energetic at Night

Why do I feel more awake and energized at night?

There could be various reasons why you feel more awake and energized at night. One possibility is that your circadian rhythm, or your body’s natural sleep-wake cycle, is disrupted or delayed. This can make you feel more alert and awake during the evening hours. Additionally, you may have a lifestyle or work schedule that requires you to be more active at night, which could contribute to feeling more energetic during that time.

Is it bad to feel more awake and alert at night?

While feeling more awake and alert at night is not inherently bad, it can be problematic if it interferes with your ability to sleep. It is important to maintain a healthy sleep schedule and get enough restful sleep each night. Otherwise, you may experience difficulties with productivity, mood, and overall health.

What are some ways to manage feeling more energetic at night?

If you frequently feel more energetic at night, there are several strategies you can try to help manage this. For example, you could try adjusting your sleep schedule so that you go to bed and wake up at consistent times each day. Additionally, avoid consumption of caffeine and stimulants during the afternoon and evening, as this can disrupt your sleep-wake cycle. Engaging in relaxation techniques such as meditation or yoga can also help calm your mind and body before bedtime.

Should I speak to a healthcare provider if I frequently feel more awake at night?

If you frequently struggle with feeling more awake and alert at night, it may be beneficial to speak with a healthcare provider. They can evaluate your sleep patterns and provide recommendations for lifestyle changes or treatments that may help improve your sleep quality and energy levels. This is especially important if you frequently feel fatigued or struggle with productivity during the day.

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