As you increase your exposure to natural sunlight, you must also limit the  artificial light in your life. Artificial light, much like processed food, is man-made and can have negative effects on the body. The human body is optimized for natural sunlight.

 

Modern humans have replaced the sun with artificial light, subsequently disconnecting their biological clocks from nature. Artificial light includes computer screens, flat-screen TVs, indoor lighting, and the light emitted by cell phones. Artificial light is detrimental because it is not balanced.

 

The graph below depicts what your eyes perceive when looking at a flat-screen TV. Notice the significant blue-light spike and the unbalanced spectrum of colors. Blue light tricks your biology into thinking it's the wrong time of day. For example, watching TV at night stimulates your brain, makes your body think it's solar noon, and disrupts your natural circadian clock. The blue light emitted from gadgets will ruin your sleep and eventually destroy your metabolism.