245 亻+ 建【jiàn】=健【jiàn】（形声）

建【jiàn】build

健【jiàn】healthy; strong; well-set; stren; toughen; be strong in; be good at

①健康【jiànkānɡ】health; physique; healthy; sound

※健儿【jiàn'ér】<n.>valiant fighter; good athlete

※健在【jiànzài】<formal> be still living and in good health

②※善于【shànyú】be strong in; be good at

※健谈【jiàntán】be good at talk

③※使强健strengthen; toughen; invigorate

※健身【jiànshēn】gym training

※健身房【jiànshēnfánɡ】<n.>gymnasium; gym