I feel the same way about roller derby- I sometimes really really want to...and then I remember that I fear losing teeth....
I would live to do that too! I think I envision myself a whole lot tougher than I am. Those ladies could probably eat me for breakfast
The very worst "someday" is waiting till someday we are skinny to live our lives. Don't put your life off till you are skinny because you may not have that opportunity then. Carpe dium!