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only smart people do exercise. exercise can be smart or stupid. exercise keeps the brain strong. it is fashionable to do exercise.
lead to learning troubles later. cause physical disabilities later. stimulate the five senses. bring about changes in the brain.
generate new blood vessels. change the way a person thinks. promote brain development. divert one’s attention.
be done in a group. be done on a daily basis. involve great difficulty. increase the heart rate.
have delivered their babies have born their babies have their babies born have their babies delivered
high-altitude babies tend to have high blood pressure in later life. under-weight babies have a shorter life span. babies born to poor families lack hormones before birth. new born wealthy families have larger heads compared with their bodies.
It helps people think more clearly It improves long-term memory It makes babies more intelligent It strengthens blood vessels
"control". "strengthen". "operate". "encourage".
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