Question

1. which brain function improves due to enhanced blood flow during exercise?

a. bone density
b. cognitive function
c. vision
d. immune defense

Explanation:

• Option a: Bone density is related to bones, not brain function, so it's incorrect.
• Option b: Enhanced blood flow during exercise supplies the brain with more oxygen and nutrients, which improves cognitive function (like thinking, memory, etc.).
• Option c: Vision is related to the eyes and visual system, not directly improved by brain blood flow from exercise.
• Option d: Immune defense is about the immune system, not brain function.

Answer:

b. Cognitive function