Shower dilemma

After building up a sweat pulling vines out of trees the other night, I took a quick shower. I was in a bit of a hurry, as Lost was about to start, and I wanted to give it a second chance, after watching one episode earlier (spoiler alert: I've now concluded it's boring, so I won't bother again). I switched off the water, and then it occurred to me: what is the optimal time to let the water just drip off you before you start towelling yourself dry? I realize there are all sorts of additional factors to take into consideration, but I am of fairly average build and my towels are of average absorption. We can assume room temperature and normal humidity for a bathroom.
This could save days or even weeks over the course of a lifetime...