People need cholesterol to maintain your sanity.
1. cholesterol [kəˋlɛstə͵rol] (n.) a substance in your blood that can cause heart disease if you have too much of it
1. semi- = half
semifinal (n.) one of the two games that are played immediately before the last game in a sports competition. The two people or teams who win the semifinals play each other in the last game, called the final, to decide who wins the competition.