It is known that ambient light can influence aspects of human physiology including brain function, circadian rhythm, heart rate, and hormone release. But most studies of this have focused on the effects of light during the night -- few have examined the body's response to light during the day.
Bright Light in the Morning
A new study exposed participants to 21 minutes of bright white light in the morning. They became more alert, and brain images showed that regions of the brain involved with alertness and some cognitive processes became more active.
Attention, Alertness, Performance
Those brain regions are also involved with attention and arousal regulation. This means that light exposure could affect performance and alertness at work.
Isn't it nice to know that something so simple, harmless and inexpensive can solve such a common problem?
Sitting inside a poorly lit office surrounded by incandescent or fluorescent lighting day and night starves your body of the unfiltered ultraviolet light that helps your body produce vitamin D. Science is really beginning to appreciate how full-spectrum light improves our health.
Nevertheless, many of us spend our days -- and some evenings -- locked in a poorly lit office and have very limited time to obtain the sunlight our body needs.
The human race evolved under the sun, and for thousands of years lived in close harmony with its heat and light.
A little more than 50 years ago, doctors in Europe and North America were using sunlight to treat potentially fatal diseases on a routine basis, and a number of hospitals were built specifically for sunlight treatment. In fact, sunlight not only increases your energy and general well being, but it can also help:
The value of appropriate pure sunlight exposure on a daily basis cannot be understated. If your location or your current line of work does not make it possible to get such access to the sun, then full-spectrum lighting is your next best option, as it can provide you with some of the same benefits.
Please don't be fooled by imitation neodymium incandescent bulbs that are commonly promoted as full-spectrum bulbs. Although they are cheaper they will not provide the beneficial wavelengths you need to achieve the benefits.
If you are unable to find the full-spectrum bulbs locally, we have gone to China to secure the highest quality, lowest cost, full-spectrum bulbs for your convenience: Way Healthier Full-Spectrum Lighting sold in our Web store.
Of course, another common reason for afternoon drowsiness would be having a fast food lunch or one that is high in processed foods and sugars. Typically, within 45 minutes of finishing such a meal you will develop rebound hypoglycemia that will make it difficult to stay focused and alert, and you may even feel the need for a quick nap.