Rule #1: Exercise boosts brain power.

    The human brain evolved under conditions of almost constant motion.
    From this, one might predict that the optimal environment for processing
    information would include motion. That is exactly what one finds. Indeed,
    the best business meeting would have everyone walking at about 1.8 miles per

    Researchers studied two elderly populations that had led different lifestyles,
    one sedentary and one active. Cognitive scores were profoundly influenced.
    Exercise positively affected executive function, spatial tasks, reaction times
    and quantitative skills.

    So researchers asked: If the sedentary populations become active, will their
    cognitive scores go up? Yes, it turns out, if the exercise is aerobic. In four
    months, executive functions vastly improve; longer, and memory scores
    improve as well.

    Exercise improves cognition for two reasons: