[Fradow]

Offices generally don't have showers.

People also generally don't arrive sweaty when biking (at least not more than those taking public transportation in the summer).

To avoid being sweaty: go slower to not over-exert yourself, wear less clothing (you might be a bit cold when starting your commute, but that's not a big deal), and if it's still not enough (not fit enough, hills, etc...), an electric-assisted bike might be the solution.

[vladvasiliu]

Also: don't wear a backpack if it's not one of those "air-something" that allow airflow on your back.