Suggest me some weight-free exercise for upper rear legs.?

hi..i am 21 and i used to do pushups only until that time last yr...but few days ago i took free weights and practiced DEADLIFTS. since i be careless, i have serious lower back injury. afterwards after doing a lot of hyperextensions i recovered somehow. in a minute i dont wanna take weightiness anymore before i turn 30 but still wanna built a honest upper back. any suggestion plz..

---

Answers:    If you have a serious back injury, did you see a physical psychoanalyst? If so, they might have some pious suggestions for you.

Swimming is a non-weight bearing exercise and it builds your vertebrae muscles nicely.

Previous：Survey-Masterbation-is it ok when your married?   Nest：Suffered next to headache?