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Calisthenics

//ˌkæ.lɪsˈθɛ.nɪks// noun

Noun

1
Physical exercises with the participation of a multitude of muscles and often minimal equipment (thus, usually bodyweight exercises); strength training aspects and cardio aspects are both involved, and stamina is often a focus. in-plural, plural, plural-only
"Just before sacktime, the Captain stood beside his sleeping bag doing his daily calisthenics; stripped down to his flaming red long johns, […]"
2
light exercises designed to promote general fitness wordnet
3
A system of such exercises. plural, plural-only, singular
4
the practice of calisthenic exercises wordnet

From Ancient Greek κάλλος (kállos, “beauty”) + Ancient Greek σθένος (sthénos, “strength”) + -ics.

Unscramble this word: calisthenics