Full disclosure: I’m not and have never been skinny, so I’m not really sure what skinny people do. However, I’m making it my mission to figure it out.
And one thing I imagine skinny people do? They shower often. Because they work out a lot. When I am blowing off my work outs I can pretty come up with any excuse to do so. One good one is to shower in the morning, then not work out over lunch because — I already showered!
So no more showering excuses. Skinny people would just shower again. Get to it.