I injured my leg last month (tore my ACL) from sparring and cannot spar until like around nov-feb. What martial arts can I still do with a bad leg? I was told by my doctor that I can still practice as long as I am not sparring in the meantime. So would tai chi be a good idea, i see a lot of old people doing that so i figure that must not be very strenuous. I also heard that Eskrima/Kali may be a good option since it involves mainly weapons. Any advice?