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.
According to the current Z87.1-2010 standard, safety glasses must carry the manufacturer's marking, followed by a + sign if the lenses are Impact Rated. For example, if the safety glasses are made by 3M and are Impact Rated, the lenses must be marked 3M+.