I suffered a car accident 11 years ago and it affected my hip movement on my left side. For instance, going for the omoplata while in bottom half guard with my right foot is easy, and with my left is impossible. I have a feeling that there is room for improvement though. Does anybody have any tips on how to improve hip movement through specific strecthing or practice? This really afects my game negativelly since my triangle and armbar from the guard tend to be onesided. I apreciate any help.