Smart exercises

What does the phrase "hitting the books" mean in the passage?

What does the word "apparent" most likely mean in the sentence: "Researchers have seen an apparent connection between exercise and brain development."

What does the word "concentrate" mean in the sentence: "Exercise allows people to concentrate better."

What does the word "associate" mean in the sentence: "Children will begin to associate physical activity with higher learning."

What does the word "beef up" mean in the sentence: "Older people can beef up their brains by working out as well."

What does the word "complexity" mean in the sentence: "Exercise for older people should involve some complexity."

What does the word "stimulate" mean in the sentence: "Babies need movement that stimulates their five senses."

What does the word "motion" mean in the sentence: "They need to establish a connection between motion and memory."

The word "literally" in the sentence "Exercise can literally cause physical changes in the brain." means:

What does the word "pediatrician" mean in the sentence: "Margaret Barnes, a pediatrician, believes in the importance of exercise."

In the sentence "This allows people who exercise to concentrate better," what does the word "allows" mean?

The phrase "short-term memory" in the passage means