Many people suggest taking up Aikido if one is an older beginner student. Personally I would be hesitate to recommend that. Almost all Aikido techniques involve take downs or throws and if you don't fall or roll correctly (which can take take a long time to learn) you can seriously hurt yourself. It would be very easy to dislocate a shoulder or break a collar bone while practising Aikido. I know from experience. Aikido is a fascinating martial art and beautiful to watch but just be aware that there is potential for a serious injury if not done correctly.