Sunlight’s impact on your weight

BIRMINGHAM, (WIAT) – A new report shows that the time of day you’re in the light could impact how much you weigh.

Researchers at Northwestern University’s School of Medicine found that people who got most of their exposure to light early in the day had a significantly lower body mass index than those who got most of their light later in the day. They found light impacted about 20% of someone’s BMI.

Researchers said the key time to get bright light is between 8 am and noon and if you get just 20 to 30 minutes during that time it can impact BMI.

Early morning light waves have more of the blue light that is most likely to impact your circadian rhythms, which is your sleeping and waking cycle,  and experts say those rhythms plays an important role in regulating metabolism.

Copyright 2014 WIAT-CBS42

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