Author Question: Oscar is 75 years old. His doctor has encouraged him to walk briskly each day in order to maintain ... (Read 120 times)

anjilletteb · **on:** Jun 19, 2018

Oscar is 75 years old. His doctor has encouraged him to walk briskly each day in order to maintain or improve his cognitive performance. What is the most likely reason for this?

a. Exercise may boost neurogenesis, particularly in the amygdala.
b. Exercise may reduce excess noise in his neural activity.
c. A fit cardiovascular system may increase delivery of oxygen to the brain.
d. Brisk walking may prevent neural decay, particularly in the amygdala.

Question 2

Sitting predicts risk of death independently from a persons level of exercise. Based on the average person who sits 55 of their day, how many in that group would have died after 13 years of follow-up?

a. about 7
b. about 9
c. about 13
d. about 19