Did you know that people who are double jointed can have heart problems from it? I found this out today when I took my boy to the doctor. We went in because most of the time when he exercises he gets chest pains, I never realized him being double jointed could be the reason. He was sitting there doing silly, weird things with his arms when then doctor walked in and so then he was asked how double jointed are you and then the doctor helped him find more things. Well after showing the doctor that he is double jointed in his legs, ankles, and arms, we then found he can do things with his wrist and thumb. So we was sent for chest xrays and EKG and was told he will probably have to see a specialist at childrens hospital. Please keep him in your prayers. I can't wait until we get the test results back.