The Unwritten Rules of Social Relationships 23

In my latest reading of The Unwritten Rules of Social Relationships, the topic was good grooming. I think I dress appropriately in public, overall. My problem in the past, though, was that I had to walk uphill to school every day, with the result that I was often sweaty when I arrived. What I should have done (and did do, often) was wash up in the restroom before I presented myself to the general public. But what do you do when your clothes are sweaty? Take a change of shirt? I suppose. But my backpack was heavy enough as it was!