体质

She was born with a poor constitution.

You need more protein to build you up.

My physique has improved through exercises.

People's constitutions differ, so does their resistance to disease.

develop physical education and build up the people's health

have a weak/frail/feeble constitution

have a vigorous/robust constitution

improve/strengthen sb's physique; build up a strong constitution; build up/strengthen one's body

weaken sb's constitution/physique

undermine/shatter sb's constitution; harm sb's physique

agree with/suit sb's constitution

rebuild a constitution