It was pretty extensive - we worked out 8 hours a day, 5 days a week, for 3 months, which I think is more than anybody in the Olympics. I thought well I don't need this, the girls need it, but it was a gift.
If you have an idea that seems worth doing, don't wait to hire other people and get funding and all those things. Just start doing it, wait to see what happens, and then iterate on that.