Sets: 3，Reps: 20
3组动作，每组重复20次
A: Stand with feet together holding a dumbbell in front of chest with both hands.
A:两脚并拢站直，双手握住哑铃举到胸前。
B: Engage abs and grasp dumbbell with right hand, pressing right arm overhead as left knee lifts in front of hip and left arm lowers by side. Balance for one count, return to start. Repeat on opposite side. That's one rep.
B:收紧腹部并用右手握住哑铃，把右臂伸到头部以上，抬起左膝盖到臀部前面，同时放下左臂到身体一侧。数一下的同时坚持保持平衡，再重新开始。在另一侧做相同动作，这样就完成了一次重复动作。
