expression, i-adjective
unable to stay healthy; ruining one's health; body can't take it
Used when physical strain, overwork, or lifestyle is harming one's health. Often in negative potential form: 身が持たない.
こんなに残業が続くと身が持たない。
If this overtime keeps up, my health won't hold out.
毎日徹夜では身が持たないよ
Staying up all night every day will ruin your health.
expression, i-adjective
unable to maintain one's fortune; financially unsustainable
Rare, figurative extension of the health sense. Used when one's wealth or lifestyle cannot be sustained. Often in the same negative potential form.
こんな贅沢を続けていたら身が持たない。
If I keep up this luxury, I won't be able to maintain my fortune.