Originally Posted by
bluefoxicy
As for my "ceiling," I can commute to work every single day for 2 weeks straight. I would figure that my body wouldn't have enough endurance to go half a month and then demand rest; if it can keep things in line for 14 days straight, it should be able to do so indefinitely.
Periodization is a common form of training where you progressively build up the amount of stress over a few weeks and then back off for a week recover and repeat. Read Friel's Training Bible for more details.