名詞 calisthenics:

1. the practice of calisthenic exercises
   同義詞：callisthenics
2. light exercises designed to promote general fitness
   同義詞：callisthenics

cal.is.then.ics

n.Sports （名詞）【體育運動】
(used with a pl. verb)Gymnastic exercises designed to develop muscular tone and promote physical well-being:
（與復(fù)數(shù)動詞連用）健美體操法：一種健身運動，用于增強肌肉彈性并改善身體狀態(tài)：
例句：
Sit-ups, trunk twists, and other calisthenics are demonstrated on the videotape.
錄像帶上演示了坐下、起立、屈蹲以及其它健美操練法

(used with a sing. verb)The practice or art of such exercises:
（與單數(shù)動詞連用）健美操：這種運動的練習(xí)或藝術(shù)：
例句：
Calisthenics is recommended to relax the muscles before a run.
建議在跑步之前做一下健美操來放松一下肌肉

來源：
From Greek kalli- [beautiful] from kallos [beauty]
源自 希臘語 kalli- [漂亮的] 源自 kallos [美]
sthenos [strength]
sthenos [力量]

【引伸】
cal.isthen.ic
adj.（形容詞）