The major breakthrough in the study of dreams came in 1953 when researchers Eugene Aserinsky and Nathaniel Kleitman studied and discovered what happens when a person falls asleep.They found that the body enters into a psycho-physiological state in intervals of 90 minute cycles during sleep. This physiological state consists of heightened brain activity, Rapid Eye Movement (REM), increased breathing, a temporary paralysis of the body and genital engorgement. Through experiments, they confirmed that these physiological observations were the result of the person being in the dream state.
Answer: Homogamy
Homogamy is a term used in sociology to describe the tendency for sexually partnered couples to resemble each other, in some culturally important way. It can be based on status, class, gender, ethnicity, or religion, or age. It is a form of assortative mating.
<span>Students with big smiles had the
longest lifespan, followed by those with partial smiles, and then by those with
no smiles.</span>
An examination by specialists at Wayne College in Michigan,
America proved that being happy can extend your life span. They arrived at
their decisions by examining 230 pictures of baseball players from the 1952
baseball enroll. Of the 184 players who
had since passed away, those in the "no grin" area experienced a
normal of 72.9 years while the "incomplete grin" bunch lived to
around the age of 75.
Those with the most stretched out smiles experienced a
normal of 79.9 years – an entire seven a greater number of years than their
gloomy partners.
