Early Burst of Sun Can Boost Your Whole Day

Early Burst of Sun Can Boost Your Whole Day

Have you ever suspected that actual sunlight could make you physically lighter? Your body clock responds to the daily light cycle of dawn, daylight, dusk and dark. It influences your metabolism, your hormone secretion, your brain waves, and your mood, including your interest in sex.

Related: The Health Benefits of Sunlight

Now, it seems, if you’re regularly exposed to 20-30 minutes of sunlight between 8am and noon, your BMI will be lower than someone who misses those early rays -- even if all other variables are the same. The effects are due to light’s influence on your appetite control hormones, your glucose control systems, or something we don’t know about yet. But here’s how decipher the quality of your light exposure:

You need exposure to light that’s rated at 500 Lux. A cloudy day serves up more than 1,000, while direct sunlight delivers around 32,000 to 100,000 (so don’t over do it!). A bright office only serves up around 400 Lux. Moonlight? 1 Lux. A moonless night away from city lights --you’re out of Lux.

So take time in the early morning to go outside for 20 minutes; then take a midmorning break and head into the light for another 10 minutes or more. If you’re also exercising in the gym or getting your 10,000 steps a day at the mall, you’ll get double benefits -- and soon feel very en-lightened!

Related: The Benefits of Morning Exercise

Medically reviewed in May 2019.

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