beneficial

beneficial (http://definr.com/beneficial)

     adj 1: promoting or enhancing well-being; "an arms limitation
            agreement beneficial to all countries"; "the
            beneficial effects of a temperate climate"; "the
            experience was good for her" [syn: good]
     2: tending to promote physical well-being; beneficial to
        health; "beneficial effects of a balanced diet"; "a good
        night's sleep"; "the salutary influence of pure air" [syn:
         good, salutary]