The only tweak that (as far as I know) I can take credit for is squirting the water on the soap.
I like the experience of it being a quick, cold shower, and I have now learned to find those invigorating. I try to make this my default shower nearly every day, with a "luxury shower" on Sunday where I take my time with some hot water.
I must admit sometimes I take a regular shower when I just don't feel like taking one of these modified navy showers, but it's one of those things where doing the best practice 90% of the time still makes you better off then nearly everyone else.
