I cycle 6.7 miles to work, and when I first started I used to shower as soon as I got in, all hot and sweaty. However, showering when you're still hot is no good as you end up still all sticky after the shower. So then I decided to wait half an hour to cool down before I went to the shower. The thing is, after that cooling down period I found that I didn't seem to need a shower anyway. I shower before I head off to work and a bit of sweat after that doesn't seem to make me smelly. I will shower if I get exceptionally sweaty, but it doesn't seem to happen much. I wash my face to get the sweat off, and change into a new set of clothes, but that's about it.