The painful side effects this has on your muscles and extremities (arms, legs, hands, feet, head) are nothing compared to the heart hazards.
这对你肌肉和四肢(手臂，腿部，手，脚，头)所起的副作用是痛苦的，但跟它对心脏的危害比起来，是微不足道的。
The muscles of the torso stabilize the spine and provide a solid foundation for movement in the extremities.
躯干肌肉对脊骨起到稳定作用，并且对四肢的运动提供了坚实的基础。
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