K-Complex and sleep spindles are two types of brain activity that indicate the transition into REM sleep

Bolin is a teacher who finds his job very stimulating. Irwin, his childhood buddy, has never found his vocational niche and stocks grocery store shelves for a living. As these friends move into middle age, what is MOST likely to happen?

a) Both men will become more mentally flexible. b) Predictions are impossible. c) Bolin should become more mentally flexible; Irwin will cognitively decline. d) Both men will decline cognitively.

Todaywe saysomeone has a "good sense of humor" if theyare funny. But this term originally

meant A) verynervous person B) person's physique was proportional C)bodyfluids were in balance D) person has a quick temper