Your data. Your choice.

If you select «Essential cookies only», we’ll use cookies and similar technologies to collect information about your device and how you use our website. We need this information to allow you to log in securely and use basic functions such as the shopping cart.

By accepting all cookies, you’re allowing us to use this data to show you personalised offers, improve our website, and display targeted adverts on our website and on other websites or apps. Some data may also be shared with third parties and advertising partners as part of this process.

Anna Sandner
Background information

Tried it out: Awake and in a good mood thanks to a daylight lamp?

Anna Sandner
13-2-2025
Translation: machine translated

To brighten up the tired, grey winter mood, I spent two weeks soaking up light: with a daylight lamp. Read on to find out whether this has lifted my spirits and eased the winter doldrums.

A light has dawned on me, and it's daylight. After two enlightening weeks of trial and error, I ask myself: why didn't I dare to try a light therapy lamp earlier in the grey winter? Because although I've often toyed with the idea, I didn't quite reckon with noticeable success. But now I wanted to find out for my tried-and-tested-series.

Daylight lamps lift the mood - for me too?

During this time, I have two light therapy lamps in use, which I also use for product tests. You can read my impressions of the TL 20 and TL 100 from Beurer here:

Full enlightenment with the first blink of an eye

Not least in an exciting interview with chronobiologist Henrik Oster, I learnt that the timing of the light shower is crucial if I want to positively influence my internal clock.

"Can I give my internal clock a boost with a light shower in the afternoon?" I asked the expert at the time. His answer was clear:

"It doesn't help much if you use a light shower in the early afternoon. At least it has very little effect on the internal clock, as it is insensitive to light at midday. It can only adapt to the marginal phases of the night. Timing is therefore important." And the manufacturers of light therapy lamps also generally state that a morning light shower between 6 and 8 a.m. is most effective.

This makes it clear: I place one of my two daylight lamps right by my bed and the other on my desk.

Day 1: And I'm already awake

The wintry dark grey is once again giving its all today, creating ideal conditions for the start of my experiment. There is definitely no danger of the real sun distorting my test results. As the alarm clock rings, I press the button on the TL 20 and the bedroom is brightly lit at a stroke. The 10000 lux is quite something. The light is not dazzling, but creates a pleasant atmosphere.

Wonderful, my mood is immediately better. Of course, this can't be due to any physiological improvements after just a few minutes. But the colour of the light alone, which corresponds to that of sunlight, chases away the gloomy winter mood a little.

When I sit down at my desk a little later, I switch on my own little sun here too - this time the TL 100, which appears even brighter thanks to its larger illuminated surface. But I'm not dazzled by it either. It stands next to my computer on the desk and shines at me from the side.

An illuminating test start

Days 2 to 5: I've never had so much sun in winter

The most noticeable effect is that my eyes are not so tired. I feel wide awake as soon as I get up, which usually takes a while. I am thrilled. After my discovery of morning lemon water, I think I've found the next big game changer when it comes to waking up.

If you want to find out more about the topic of light therapy and daylight lamps, you can find background information and answers to frequently asked questions here:

Days 6 to 10: I have competition

I'm not surprised that after a few days my human flatmates want to compete with me for my daylight lamps. After all, I've been raving about the positive effect for days, and not just casually. But I also have to compete with my light-loving four-legged friends to get a place in the sun. After a week, my two cats have obviously also taken a liking to the lamps, and the best places in the sun are quickly taken.

I'm not surprised, though, as the cats also benefit from the soothing light. So the lamps stay switched on all day so that everyone gets their chance to sunbathe.

After one week of trialling, it's absolutely clear that it's going to be several trial weeks. I'm not ready to part ways again. So I'm adding another week.

Days 11 to 14: It has never been so easy to establish a new routine

But in the end, I can definitely feel the effect: I feel awake more quickly in the morning and my eyes in particular are not tired. I'm fit during the day, not even the afternoon slump catches up with me. I also feel more balanced in the evening and not so exhausted from the day. My sleep was already good before these trial weeks, so I can't see any changes here. On the other hand, I have more energy throughout the day for the same amount of sleep.

Conclusion: Never again without a daylight lamp!

Rarely has a trial week (or two) been as pleasant and productive as this one. For a change, I didn't have to torture myself, overcome myself or give up anything. There was simply something extra - namely daylight. I enjoyed it to the full and benefited greatly in terms of alertness and balance. Even though my experiment is now officially over, I don't want to miss out on daylight from the socket and will stick with it for the rest of the winter.

You can read about how I fared in my other trial weeks here:

Header image: Anna Sandner

19 people like this article


User Avatar
User Avatar

Science editor and biologist. I love animals and am fascinated by plants, their abilities and everything you can do with them. That's why my favourite place is always the outdoors - somewhere in nature, preferably in my wild garden.


Background information

Interesting facts about products, behind-the-scenes looks at manufacturers and deep-dives on interesting people.

Show all

These articles might also interest you

  • Background information

    Tried it out: from cold shower phobia to a morning routine - thanks to your tips

    by Anna Sandner

  • Background information

    I did it! Lukewarm water in the morning wakes me up quickly and keeps me going round the clock

    by Anna Sandner

  • Background information

    I did it! What happened when I attempted 10,000 steps a day

    by Anna Sandner