How long does juice keep after you make it?

I just made my first juice! I followed the Green Juice recipe from reboot and ended up with about 35 oz of juice which I promptly drank all of. However, it took me over 10 minutes of solid cleaning. There's no way I'm going to be able to spend 10 minutes every morning cleaning the juicer.

Is there a substantial drawback to juicing the night before? Or even a day before? What about freezing juice?