马上28岁了，却对sex失去了兴趣

oldhand

I would first have my back checked out for haniated disk, spinal stonosis etc.

Then, develop an exercise program to gain my healthy back back.

Ckh

多锻炼，增强肌肉控制能力。
另外背痛难道是因为女上的时候压得太用力？