Hi Dr. I hope all is well with you today sir. I recently had knee surgery (approximately 3 months ago). I feel that I ve gotten back roughly 95% of my strength and flexibility back. I had a simple meniscus repair on the outer part of the left knee and a simple cartilage repair on the inner part of the left knee. I m pain free - for the most part. I ve been an avid martial arts practitioner all my life. I was planning to go back this evening and participate in some light sparring. I ve gotten the all clear from my orthopedic surgeon. I do notice that I ve lost a significant amount of flexibility post-surgery - mostly in my hamstrings. Do you have any recommendations re: exercises to help regain flexibility sir? Thank you in advance.