傷身

to be harmful to one's health

to injure / injury / wound

body / life / oneself / personally / one's morality and conduct / the main part of a structure or body / pregnant / classifier for sets of clothes: suit, twinset / Kangxi radical 158

a little bit of it does one good, but carried to excess it's harmful (idiom)

Rear a tiger and court disaster. (idiom); fig. if you're too lenient with sb, he will damage you later / to cherish a snake in one's bosom