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Callisthenics are exercises you do with your own body, not with heavy gym machines. Push-ups, sit-ups, squats, jumping jacks, holding a plank, pulling yourself up on a bar — that family of moves. The aim is to make you strong and healthy by using your body as the weight. Schools, armies, and people who train in parks all use this kind of work. Though actually, the word can sound a little old or formal now; younger speakers often just say bodyweight training, or they name the move. You will also see the spelling calisthenics (one L). That is the usual American spelling of the same word, not a different sport.
徒手體操；柔軟體操（台灣學校體育常用這個說法）
組成From Greek pieces: kallos, beauty, and sthenos, strength. The idea was strength that still looks graceful.
原始詞典資料1 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
這個拼法也被記錄為下列字的變化形：
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。