Both the Brains and muscles controls the body, while the Brain controls all over the body and the muscles help us to move.
The human brain is an organ responsible for controlling most of the activities of the body while the muscle are body tissues that contract and produce motion.
The common features in the brains and muscles is that they need to be used consistently before there can be an improvement thereoffs.
Therefore, it is a true statement that the Brains and muscles need to be constantly exercised in order to become stronger.
Missing word "For example: What do brains and muscles have in common? (Attention getter) Brains and muscles should both constantly be exercised in order to become stronger. (clincher)"
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