Skipping rope
A skipping rope was a tool for exercise consisting of a length of rope with handles attached to each end. Holding the rope with both hands, the individual jumped as they swung the rope over and under their body in a continual rhythm. For extending the life of the rope and for shock absorption from the jumping, an individual would use an exercise mat. 

In 3189, aboard the , Lieutenant Keyla Detmer exercised with a swinging rope in the ship's gymnasium. She paused in her exercising when Doctor Hugh Culber conducted a medical scan on her, then immediately resumed her activity. ()

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Exercise