constitutional

a regular walk taken as a form of exercise

of benefit to or intended to benefit your physical makeup; "constitutional walk"

sanctioned by or consistent with or operating under the law determining the fundamental political principles of a government; "the constitutional right of free speech"; "constitutional government"; "constitutional guarantees"

existing as an essential constituent or characteristic; "the Ptolemaic system with its built-in concept of periodicity"; "a constitutional inability to tell the truth"

constitutional in the structure of something (especially your physical makeup)