Why do you have less energy in spring than in winter, even though the sun is shining again?

Does spring fatigue affect you every year? More sunshine, longer days — and yet less energy? You’re not alone.

Spring fatigue isn’t about weak willpower or a lack of vitamins. Most often, it’s about a disrupted circadian rhythm — your internal biological clock that regulates energy, focus, and sleep quality. And light is the main signal your body uses to orient itself.

Summary of today’s article

• Spring fatigue and the impact of light on the body
• Why energy is lacking during the day
• Red light as the key to better sleep
• Red light and regeneration
• How to set up your home lighting — not only in spring
• Red light vs. conventional evening lighting
• How red light fits into your daily routine
• Light as a subtle ally against spring fatigue

Spring fatigue and the impact of light on the body

During winter, the body adapts to shorter days and lower intensity of natural light. In spring, light conditions change rapidly. Days become longer, light becomes more intense — but if you spend most of your time indoors, your brain may not receive the proper signal that a new seasonal mode has begun.

The result can be daytime fatigue, reduced concentration, irritability, or difficulty falling asleep. That’s why it makes sense to address high-quality indoor lighting that respects your biology and helps synchronize your daily rhythm.

Why energy is lacking during the day

Energy in the body is produced in mitochondria — small cellular “power plants.” They respond not only to nutrition, but also to light.

Even in spring, we often work under artificial lighting. If you spend most of your day under standard LED lighting that lacks red and especially infrared spectrum, your body may not receive a complete light signal. As a result, it may remain in a kind of transitional mode, and your energy levels fluctuate throughout the day.

Natural daylight is spectrally richer — it includes red and infrared components that are biologically natural and help support stable performance and focus. When this part of the spectrum is missing indoors, fatigue can become more pronounced.

Red light as the key to better sleep

Evening plays a crucial role, as light intensity should naturally decrease. White and blue light suppress melatonin production, which is one of the reasons why falling asleep can be more difficult — not only in spring.

Red light is exceptional in this regard. It does not suppress melatonin; on the contrary, it supports the body’s natural calming process. It is ideal for bedrooms, bathrooms, or relaxation areas of your home.

Red light and regeneration

The red spectrum supports evening relaxation, natural sleep, and overall well-being. Unlike conventional evening lighting, it does not create a false “daytime” signal in the body.

Beyond sleep, red light also positively influences regeneration. It is used in light therapy, helps relax muscles, reduce stress, and promote overall balance. Unlike standard lighting, it is non-disruptive and very gentle on the eyes.

How to set up your home lighting — not only in spring

The ideal combination is simple. During the day, use full-spectrum lighting with sufficient red and infrared components to support alertness, performance, and energy. In the evening, gradually transition to warm and red tones for relaxation.

This way, the body receives clear signals and spring fatigue gradually diminishes. Properly adjusted lighting can have a greater impact than another coffee or energy drink.

If you want to support both energy and quality sleep in spring, start by reviewing your indoor lighting. Mitochondriak® offers solutions designed to work in harmony with your body’s biorhythm.

In the category red indoor lighting, you’ll find E27 bulbs, E14 bulbs, GU10 bulbs, as well as a self-adhesive film blocking 100% of blue light, useful for example during nighttime visits to the refrigerator.

Red light vs. conventional evening lighting

Most households use the same lighting in the evening as during the day. This is one of the main reasons the body cannot naturally wind down.

Conventional white light keeps the brain alert, whereas red light sends a clear signal to rest. It is soft, non-glare, and does not strain the eyes — especially welcome after a long day.

How red light fits into your daily routine

You don’t need to change all the lighting in your home or introduce complicated rituals. A small adjustment is enough.

In the evening, dim the main light and switch to red or very warm tones. If you’re not ready to change bulbs immediately, wear blue light blocking glasses in the evening.

Reading, watching TV, or relaxing in the evening then becomes more natural and aligned with your biology.

Light as a subtle ally against spring fatigue

Spring fatigue is not about weak willpower — it’s about the signals your body receives.

The right combination of daytime light and evening red lighting helps your biological clock regain balance. The result is better sleep, more daytime energy, and an overall improved sense of well-being.

If you’re looking for a simple and natural way to feel better in spring, light is the ideal place to start. At Mitochondriak®, we offer solutions that make sense — for you and your body.

If our way of thinking resonates with you, help us spread the idea of light-based nutrition. Tag us on social media.

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