DrPeper hasn't returned since he posted, so I guess this is for your sake, Ementer.

I'm new here also and also new to SPD. But it doesn't take a genius to understand DrPepper's problem, as he suspected, was in the least related to artificial lighting. I'd have suggested he request a desk near a window, or in the least spend his lunch outdoors.

Light is a bio signal in a variety of ways. Searching the effects of artificial light will display a wealth of information. Light, its absence, and its spectrum trigger chemicals in our brains that can effect the workings of the mind. It is known that computer screens that have a blue hue can keep us from falling asleep properly and can for hours affect the quality of sleep we get. I know there are certain florescent lights that give me an instant headache. A lack of natural light can cause depression. DrPepper so long under those lights would most expectantly affect the chemistry of his brain. Light also controls some of how we each utilize vitamins. Sunlight gives us vitamin D, but even D supplements will not replace our need for sunlight. B vitamins have a relation to light, some utilize at night or in daytime. With improper light how we use our body's resources can change. B6 is instrumental in movement. Maybe DrPepper's football deficit was related to him getting older, or maybe his B6 was out of wack due to his lengthy absence from natural light. Too little or too much, B6 can change our motor abilities and reflexes.

In this day and age it has become difficult to avoid artificial light. The remedy would be to get as much natural light as is possible. It might be useful to limit smartphone, widescreen TV and computer monitor usage as well.

The standard disclaimer, I am not a professional at anything. These conclusions are my own based on reading and experience. The effects of artificial light is under study but I don't know how conclusive any have been. Though there is no harm in avoiding them when you can.