^^^ Err.. Not sure if you read my post in full.
1. I'm not riding a fixed gear.
2. More miles wouldn't necessarily mean MORE weight loss.
On a side note, I DID commute this morning on a WAY lower tired pressure than normal. It almost felt "too easy" to ride, and I found that I was able to put less effort into my climbs. Could it be the weight from the tire pressure that I was previously riding at that was causing me to carry more lbs ---> resulting in a higher caloric burn.
Just a thought.