| 摘要 |
A pectorals-focused exercising routine in which springs of left and right hand exercisers are urged in opening movements to windup the springs so that under spring urgency, the exerciser is raised to a ready position during closing movement, and traction to obviate slippage is established using interengaged friction surfaces to maximize spring tension during the opening movement and minimize loss of tension not effective in lifting the exerciser during closing movement.
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