Do you like yoga, I am an instructor!
I don't know much about yoga other than I think it started in India.  Are there different types of yoga?
Yes there is! I instruct yoga for the elderly. 
I bet that would by helpful both physically and mentally for the elderly.  Do you find it rewarding?
Oh definitely. Helping others is one of the greatest things in life. 
Well that goes along with the Helper theory that when one helps another, the helper benefits as well.  You have a good head on your shoulders!