I'm taking today off from exercising, because I don't want to burn out, but I am going to do some stretching. And I plan to get back into the gym tomorrow. Not sure if I'll stick with the bike, try the elliptical, or get back on the treadmill. The bike I know I can stick out for a good 45-50 minutes, and at this point, I'm going for endurance. The treadmill will likely discourage me as I won't be able to run much at all. The elliptical is a big unknown. Perhaps a combo of all three?