D'Arcy's bike commuter tip #32: Always, no matter how early it is on a Monday, and no matter how tired you are, always check your tire pressure before starting a ride.
D'Arcy's bike commuter tip #33: It is actually possible to ride for 10km on a nearly flat front tire, after discovering that it was nearly flat after riding on it for 4km, by putting all of your weight on the rear tire and unlocking the front suspension fork. Surprisingly, once you get the hang of it, you can actually go nearly full speed on an almost flat front tire if you're careful about braking and bumps.