"On May 12, 2007, senior citizen Flo Covell, 64 yr. old grandmother with rheumatoid arthritis, passed a grueling 6 hour karate black belt test (Tang Soo Do), just 18 months after undergoing major open heart surgery to repair an aortic valve and aortic aneurysm.  Flo started martial arts training at 60 years old, 3 months after her husband passed  away.  Flo knows the value of exercise first hand." Karate  improved  her rheumatoid arthritis and her recovery from open heart surgery.   It is great seeing a kicking senior citizen! Yes, senior citizens can do martial arts!