People who exercise or people who do zero exercise are polar opposites
二極化 - polars, polar opposites
Polar oppositesは全然違う、全く違うの意味ですね。
運動する人 - people who exercise
運動しない人 - people who dont exercise
全く(運動)しない人 - people who dont exercise at all
People who exercise or people who do zero exercise are polar opposites