Morning blues: Morning sickness is not just experienced by pregnant women, but can be caused by a number of factors in all people Sleeping itself can also be the cause of morning sickness. People who suffer from sleep apnoea, a condition that can cause you to stop breathing during the night, can wake in the morning feeling unrested and nauseous.
The History of Safety Glasses. Safety glasses should be worn by personnel in manufacturing, construction, medical, some service industries and sometimes sports. Although eye injury is a higher risk for these individuals, many people do not wear eye protection for one reason or another.
Safety glasses (spectacles) are commonly used as protection against impact and optical radiation. Tinted safety glasses used in torch soldering must have a shade number (1.5-3) on the lens, but do not provide adequate protection for gas or arc welding which need shades 4 or higher.