Here’s something that you’ve probably never even thought about, yet it has a massive effect on your physiology, both health and body composition–the LENGTH OF THE DAY.
What do I mean by that?
Every day the sun rises and falls, and the length of the day is controlled by these external events. When the sun rises, it’s light outside, and this signals our brain that it’s daytime. When the sun sets, there’s no more light, and the darkness signals to our brain that it’s nighttime.
Except for ONE HUGE FACTOR IN THE MODERN WORLD…
Most of us now spend our days completely disconnected from the rise and fall of the sun, and our day length is completely unlike anything seen before for our human ancestors.
Think about it: Most of go to work during the day and spend our days indoors, seated under fluorescent lighting, and then we stay up each night long after the sun goes down, with electronic devices that emit BLUE LIGHT (the very wavelength of light that signals to our brain that it’s DAYTIME).
So our day length is now completely separated from the sun. We have an ARTIFICIAL length of day dictated by the light of our electronic devices.
Now, consider this: Let’s say on a normal day, then sun might be out for 11 hours.
But because you stay up for 4 hours after sunset watching TV or on your phone or computer–with blue light pumping through your eyes straight into the circadian clock in your brain–YOUR DAY LENGTH is now 15 hours!
2. More importantly, wear blue blocking glasses after the sun goes down. (Do an amazon.com search for “blue blockers”). Or if that’s not doable for you, then get screens to go over your computer, phone, and TV that block blue light from www.lowbluelights.com
This is just a small glimpse of the effects of circadian rhythm. It goes WAY beyond just this. But I assure you, keeping a healthy circadian rhythm and normal day length is critical to your metabolic health and to your fat loss goals.