When you speak with someone, it causes your brain to work hard which is a good way to maintain brain health.
ーWhen you speak with someone, it causes your brain to work hard which is a good way to maintain brain health.
「人と話すと脳が一生懸命働き、脳の健康を維持するのに良い」
to cause A to ...で「Aに…させる」
brain で「脳」
to work hard で「一生懸命働く」
to maintain で「維持する」
brain health で「脳の健康」
ご参考まで！
カナダ 
