+1

I used to leave for work at 5am on my bike, and I'd do an interval out of my driveway to warm up. This was to start a 35 mile commute from Denver to Boulder. If you don't already, don't start drinking coffee, as it won't solve anything in the long run.

I just took the tiredness as another training challenge to beat down -- like a hill that pissed me off. Just beat the ***** out of it and find another challenge.

I wouldn't eat anything, maybe just drink some water. If you're training, you don't want food in your stomach.