A close mouth catches no flies.
病从口入。
A good medicine tastes bitter.
良药苦口。
An apple a day keeps the doctor away.
一天一苹果，不用请医生。
An ounce of prevention is worth a pound of cure.
预防为主，治疗为辅。
A sound mind in a sound body.
健全的精神寓于健康的身体。
Early to bed and early to rise make a man healthy, wealthy and wise.
早睡早起，令人健康、富有而且聪明
Eat at pleasure, drink with measure.
随意吃饭，适度饮酒。
Exercise, temperance, fresh air, and needful rest are the best of all physicians.
锻链、节制、新鲜空气和必要的休息是最好的医生。