他感到背部和身体的肌肉非常酸痛。
He felt soreness in his back and ___body muscles.
运动后要记得给身体补充足够的水分。
Remember to hydrate your ___body properly after exercising.
游泳时要注意保持身体的核心部分稳定。
When swimming, keep your ___body core stable.
锻炼对身体有好处。
Exercise is good for your ___body.