Although copper is the third most  abundant trace mineral in the body (behind iron and zinc), the  total amount of copper in your body is only 75-100 milligrams, less  than the amount of copper in a penny.
Gratuitous. Bestowed or granted without consideration or exchange for something of value. The term gratuitous is applied to deeds, bailments, and other contractual agreements. A gratuity is something given by someone who has no obligation to give and can be used in reference to a bribe or tip. gratuitous. adj. or adv. voluntary or free. gratuitous
1 : relating to or consisting in the gratification of the senses or the indulgence of appetite : fleshly. 2 : sensory 1. 3a : devoted to or preoccupied with the senses or appetitesb : voluptuousc : deficient in moral, spiritual, or intellectual interests : worldly; especially : irreligious.