Yoga seems particularly beneficial for ADD. Have never tried it personally but have seen others benefit from it. It is suggested to relieve stress and to make one more aware of and in control of the body, which might help with clumsiness for example. But doesn’t it make sense that it also would affect the basal ganglia and the cerebellum, which are involved in coordinating movements and in balance, and which have been implicated as where the ADD or ADHD miswiring lives. And it would also seem related to the concept of balance or juggling programs alleged to help with ADD.
Yoga is not in my area of expertise. You might check out this site from an ADD coach