Bike 50 miles for a good cause. (That's what CrossFit Watertown was doing in Woodbury this morning at the "Ride for Rick" benefit for Connecticut Hospice. If the camera battery hadn't died, we'd even have photos . . .)
If you can't do 50, do 10 miles or run 5K and, if you can, give a couple of bucks to somebody who really needs it.