A jumping jack, also known as a star jump and called a side-straddle hop in the US military, is a physical jumping exercise performed by jumping to a position with the legs spread wide. The hands go overhead, sometimes in a clap, and then return to a position with the feet together and the arms at the sides.
A jumping jack, also known as a star jump and called a side-straddle hop in the US military, is a physical jumping exercise performed by jumping to a position with the legs spread wide. The hands go overhead, sometimes in a clap, and then return to a position with the feet together and the arms at the sides.
Source: Wikipedia "Jumping jack" · CC BY-SA 4.0
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