His Christianity was muscular.

Benjamin Disraeli (Earl Beaconsfield) (1805-1881): Endymion. Chap. xiv.

  Shall I show you the muscular training of a philosopher? "What muscles are those?"—A will undisappointed; evils avoided; powers daily exercised; careful resolutions; unerring decisions.

Epictetus (Circa 60 a d): Wherein consists the Essence of Good. Chap. viii.