The Mishna in Pirkei Avos (1:17) says that Rebbi Shimon Ben Gamliel said that his whole life he grew up among wise men and never found something better for his Guf then silence.
If he lived among Chachomim, why was he picking up health tips? Shouldnt he have said I found nothing better for the mind? The MiShel HaAvos says that Klausenberger Rebbe answers that not speaking about things other than torah is therapeutic for the body, which then acts as a fountain of strength for the mind. Even if someone is not naturally smart the purified body then clears and sharpens the mind.
Zachor Eis Asher Asa Hashem LMiriam BaDerech BTzaischem MiMitzrayim
The Ramban and other Rishonim count, among the Mitzvos Aseh Min HaTorah, the mitzva of remembering and saying with your mouth each day what Hashem did to Miriam when she spoke about her brother Moshe. The Chofetz Chaim in Shaar Tvunah Perek 12 says that being Mikayem this mitzva can save you from the aveira of Lashon Hara. More than just saying the pasuk, says the Chofetz Chaim, one must think about the incident in order for it to have its intended effect.
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