Holiday feeling and better health throughout the year

    Watch this webinar to understand how light influences our body.
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    Key topics and learnings


    People spend most of their lives indoors, shielded from natural daylight. The light that penetrates in buildings through the windows is too weak to have a positive influence on your biological clock. The electric light indoors is good enough for visual tasks but usually insufficient to compensate for the lack of daylight.

    To optimize your light, you need to understand the four elements by which light influences our body: circadian rhythm, biological clock, daylight-detector, and the twilight zone.

    People need to start recognizing the symptoms of being shielded from daylight: poor sleep quality, little energy during daytime and mood swings and relate these symptoms to the lack of light. Then, you can start acting. Examples illustrate how this works for sleep, Alzheimer patients, summertime, winter blues. A three-step approach is explained to bring good light into your life.


    Learning objectives:


    • Light that is good enough to see, is in most cases insufficient for health, learn more?
    • Symptoms like poor sleep, lack of energy and mood swings are often caused by lack of daylight, how does that work?
    • We spend our lives indoors, in the twilight zone. How can we use light to compensate?
    • Understand how light influences your body, you can optimize your light for a year-round spring feeling
    • The three steps to good light, what are they?

    Presented by

    Jan Dennerman

    Jan Denneman

    Founder and Chairman of the Board

    Good Light Group 




    Jan Denneman is Founder and Chairman of the Board at Good Light Group as well as Honorary Ambassador Global Lighting Association.

    The Good Light Group is a non-profit organization which promotes the use of Good Light indoors. Good light is natural daylight or electric light with comparable positive effects on people’s health and well-being. Good light helps synchronizing our circadian clock, enhances the quality of sleep at night, fitness during day time and mood.

    Jan Denneman has over 45 years of experience in the field of light. He was Vice President at Philips Lighting (now Signify) in innovation, business development and sustainability roles.

    Founded several international consortia, like the Global Lighting Association, Zhaga, the Connected Lighting Alliance and LightingEurope.

    President Global Lighting Association 2007 – 2017, President LightingEurope 2013-2017.

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