关节和肌肉疼痛
Experts say weight loss and exercise should be a person's first line of defense against many kinds of aches and pains in joints and muscles.───专家认为：减肥和锻炼是一个人对抗很多种骨关节和肌肉酸痛的一线防御方式。
However, this position can mean you are forcing your body into a position that can exacerbate existing aches and strains in the joints and muscles.───然而，这个睡姿意味着强迫自己摆出一个可能加重关节以及肌肉疼痛的不舒服姿势。
be on pins and needles───坐立不安
sit on pins and needles───如坐针毡