To do a squat to biceps curl, you start with your feet about shoulder-width apart, spine straight and your core stable.
在做这个动作时，双脚与肩同宽，背挺直，保持重心稳定。
Make it happen: Core, back, and shoulder work will help you stay upright.
实现它：重心、背部和肩膀练习有助于保持运动平衡。
To exercise the core muscles while toning the back muscles and the shoulder muscles.
锻炼腹部(核心区)肌肉和肩部肌肉。
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